00319nam a2200133Ia 4500008004100000082001000041082001000051100001500061100001100076245004800087260001000135260003100145260000900176230118s9999||||xx |||||||||||||| ||und||  a547.8  bSIN/A  ap.pbsingh  br.srao 3aan introduction to synthetic drugs and dyes  adelhi  bhimalaya publishing house   c1990