Discontinued by publisher.
Description based on: June 1982.
Microfiche. <1988-> Washington, D.C. : Supt. of Docs., U.S. G.P.O. microfiches : negative.
Vols. for 1971-<1972> issued by National Institutes of Health, Division of Biologics Standards; <1975-1979> by Food and Drug Administration, Bureau of Biologics; <1982-1983-> by the Food and Drug Administration.