000 00312nam a22001337a 4500
003 OSt
020 _a070797986
082 _a(031)5/6
_bSCI
245 _aEncyclopedia of science and technology
260 _aNew York
_bMc Graw - Hill
_c1971
300 _a707p.
500 _aLibrary has vol.1 -
942 _cBK
999 _c144918
_d144918