%0 Journal Article %T Analysis of Three Penicillin Antibiotics (Ampicillin, Amoxicillin and Cloxacillin) of Several Iranian Pharmaceutical Companies by HPLC %A A. Ashnagar %A N. Gharib Naseri %J Journal of Chemistry %D 2007 %I Hindawi Publishing Corporation %R 10.1155/2007/480907 %U http://dx.doi.org/10.1155/2007/480907