Impact Factor
3.07
Estimated influence, citation density, publishing volume, and citation integrity from the analytics table.
Volume, recency, access pattern, and citing-community signals from the journal analytics record.
Recent article records with DOI-first linking and condensed abstracts.
Description based on first issue; title from title page.
Latest issue consulted: Vol. 64, no. 7 (July 2005).
Also issued online.
Microfilm. v. 1 (1939)-10 (1951). 3 microfilm reels : negative ; 35 mm.
v.11 (1952)-Will not microfilm; 20040409
Vol. 40, no. 1 (1981)19920824 Notice not published Printed on acid-free paper