data one;
infile 'c:\website\gohttp\class\4213\sas\table9_2.txt';
input gi gv gk wi wv wk;
proc print;


proc model;
parms g1-g3 w1-w3;
gi=g1+g2*gv+g3*gk;
wi=w1+w2*wv+w3*wk;
fit gi wi/OLS sur covs;
run;