au.\*:("COPELAND WH")
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A DISCUSSION OF ENZYME REFERENCE MATERIALS: APPLICATIONS AND SPECIFICATIONSFASCE CF JR; REJ R; COPELAND WH et al.1973; CLIN. CHEM.; U.S.A.; DA. 1973; VOL. 19; NO 1; PP. 5-9; BIBL. 17 REF.Serial Issue