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1Published 1958### CRL customization ### ?> ### Add publisher and desc details ### ?>Philadelphia, Pa. : Heckel Pub. Co., 1958-v. : ill. ; 35 cm.Also issued online.Subjects: “...Pharmaceutical industry Periodicals....”
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2Philadelphia, Pa. : G. B. Heckel,v. : ill. ; 32 cm.Subjects: “...Pharmaceutical industry Periodicals....”