00460nam a22001577i 4500001001000000005001700010008004100027082001900068100001700087245005400104250001000158260004300168300001700211650005600228020001800284SXC02093020260819093706.0260101s1991    ii            000 0 eng d  a509 MEN-H4222  aMenon, R G V10aHistory of science and technology /cMenon, R G V  a4 ed.  abBhagya Book House, Trivandrum,c1991  ap. ;c22 cm. 0aPure sciences - Historical & geographical treatment  a9781560247210