Corrections after submission 18.03.99:

Version 7.3 4.04.99
===================
1. page37, line 6

   Replace "However" by "This possibility to suppress radiative
corrections was discussed in \cite{770}. However"

2. page 63, after reference [76]

   Add \bibitem{770}
P.Chankowski, Proc. Quantum effects in the MSSM,
Barcelona 1997, p.87,
preprint IFT/97-18, hep-ph/9711470. 

Version 7.4 14.04.99
====================
3. 14.04.99 MIV
    ref 27 is identical to 20 in our review.

  replace "\cite{34}" by "\cite{118}"
  delete \bibitem{34}

4. 14.04.99 MIV

correct the sentence which refer to Renton review according to his
wishes.
   replave "has written" by "is preparing"
   in \bibitem{121} replace "(1999)" by "(in preparation)"

5. add in bibliography space "~" before names.

Version 7.5 15.04.99
====================

6. page 7, line 8 from bottom


replace "based on \cite{11}." by 
"expected for 1999 Summer Conferences. These future new data will include
some refinements of the analysis on the Z line shape and b-decays with respect
to the present EWWG data \cite{11}." 

7. page 22, section 6.1, line 2 from bottom

add after "experiment." 

"The Flowcharts of LEPTOP and ZFITTER are compared
on pages 25 and 27 of \cite{118}; numerical comparison of five codes
(their 1995 versions) 
for twelve observables is presented in figures 11-23 of the same 
reference."


 Version 7.6 21.04.99
====================

8. page 68

change Fig.8 to figure with mH> 90 GeV.

in caption replace "assuming mH=90 GeV." by
"using $m_H > 90$ GeV at 95 \% C.L. from LEP-2 \cite{lep2}."

\bibitem{lep2}
Limits on Higgs boson masses from combining the data of the four LEP
experiments at $\sqrt{s} < 183$ GeV,
ALEPH, DELPHI, L3 and OPAL Collaborations,
Preprint CERN-EP (1999), in preparation.

 Version 7.7 .05.99
====================

9. page

add Table with comparison to ZFITTER and Langaker

10. increase size of figures.

 Version 7.8 22.05.99
====================

11.  Here is the revised list of  corrections to 7.7 version

1) p.7, before eq(10) print "(see Fig.2)" . We have no reference to this
  figure.

2) p.8,section 2, end of paragraph 2 (before eq(13)) ,
write "loops of quarks (hadrons) and charged leptons (see.Fig3(a))."

3)p.13,section 4.1, point 1.

   Add at the end of the line " (see Fig. 3(b)-3(n))"

4)p.13,section 4.1, point 2.

    In point 2. add at the end of the line " (see Fig.3(o)-3(r))"

     Figures 3 have to be taken from UFN Figures5
     Figures caption is as in UFN. 
      
5)p.13,section 4.1, point 3.


    In point 3. add at the end of the line " (see Fig.4(a)-4(c))"

5)p.13,section 4.1, point 4.
    
    In point 4. change

      "..corrections to lepton wavefunctions."
to
      "..corrections to lepton and Z boson wavefunctions." 
   
   and add at the end of the line " (see Fig.4(d)-4(g))"

  Figures 4 have to be taken from UFN Figures 6.    
   Figures caption is exactly as in UFN.

6) p.14, section 4.2, end of the first paragraph.
     At the end of the sentence add   
   "(see Fig.3(c), 3(i), and 3(j))"

7) p.16, section 4.4, subsection 1. The end of the second sentence.
Add "(see Fig.5)"
     Fig.5 has to be taken from UFN Fig7 with the same figure caption.

8) p.16, section 4.4, subsection 2. The end of the second sentence,before 
eq.63:
  Add "(see Fig.6)"
 Fig.6 has to be taken from attached file "gluon1.tex"

 Figure caption is
"Gluon corrections to the electroweak quark loop of the Z-boson 
self-energy."

9) p18, section 4.5
   On this page Figures 3,4,5,6 have to be renamed to
                Figures 7,8,9,10 
  respectively.

According to referee suggestions we have to change  captions to
figs.7,8,9. Here they are:
  
"Figure 7. $V_m$ as a function of $m_t$ for three value of $m_H$.
The dotted parabola correspondes to Veltman approximation $V_m = t$.
Solid horizontal line traces the experimental value of  $V_m$
while the dashed horizontal lines give its upper and lower limits
at the $1\sigma$ level"

"Figure 8. $V_A$ as a function of $m_t$. (The remainig clarifications
are similar to those given to Fig.7)."

"Figure 9. $V_R$ as a function of $m_t$. (The remainig clarifications 
are similar to those given to Fig.7)."
  
 Fig.10 caption is renamed caption for Fig6.in draft 7.7
  
10) p22 ( section 5.3) first sentence, first line before comma
    add   "(see Fig.11 a)
second line, before (:)
    add   "(see Fig.11 b)

 Figures 11 have to be taken from attached file
            "Zbb.tex"
 Figure caption is
 " The vertex electroweak diagrams involving t-quark and contributing to
the Z-->bb decay. Diagram (b) represents gluon corrections
to  diagram (a)" 

11) p26, section 7.2, second line before eq 101 just before ",so it is"
add 
  "(see Fig.12)"

 Fig12 has to be  taken from attached file
         "higgs.tex"
  Figure caption is:
"Some of Feynman diagrams that give $\alpha_W^2 t^2$ corrections" 
 
12) p.29, 
   line 6,change  "become"--> "becomes";
and reference to  fig. 7 has to be renamed to reference to fig13.
  The same renaming has to be done in figure caption

13) p.31 ,we suggest to rewrite a little bit the text preceding  Table8
 
" As can be seen from the Table 8 the LEPTOP fit is very close to the
ZFITTER fit [22] and to the fit by Langacker and Erler [63].
This indicates that theoretical uncertainties are very small, 
except for the non-calculated part of the corrections, that is 
commom to all three programs."

14) p.33  fig.8 has to be renamed to fig.14 
The same in figure captions.

15) p.35, third line from the bottom,  before ".These simple..." 
add 
"(see Fig.15)"
 
  Fig.15 is "susy.tex"attached file
 Caption is 
  "Contribution of $tilde{t}$ and $tilde{b}$ squarks into  W- and Z bosons
self-energy"
   
16) p.37 ,we have to renamed Figure 9 into Figure 16; the same in figure
caption.

17) can you change the letters a,b and c that numerate the diagrams in  my
tex. files to more visible letters (change style)