00425nam a2200157 a 450000500170000000800410001704100080005808200110006610000210007724500590009826400480015730000110020565000200021665000140023670000170025020260717091038.0260717s1980    ii            000 0 eng d  aeng04a547.761 aRangnekar, D. W.13aAn introduction to synthetic drugs /cRangnekar, D. W. 1aBombay :bHimalaya Publishing House,c1980.  a250 p. 4aSynthetic drugs 4aChemistry1 aSingh, P. P.