000 00400nam a2200145Ia 4500
008 220926s9999 xx 000 0 und d
100 _aWorld Mark Press
245 0 _aEncuclopedia of Science & Technology Vol-I
250 _a1st Ed
260 _aNew York
260 _bTata McGraw-Hill Publishing Pvt Ltd
260 _c1977
650 _aEncuclopedia of Science & Technology Vol-I
942 _cREF
999 _c10271
_d10271