00383pam a2200121 a 4500020002000000041000800020082001700028100003300045245007400078260005500152300000900207653004500216  a9780853692003c  aeng  a615.191bBMA  aBritish Medical Association.  aBritish National Formulary Number 20 (Sept - 1990)hTextual Documents  aGreat Britan:bBritish Medical Association,c1990.  a562.  aPharmaceutics(Manufacture & Preparation)