Impact Factor
2.71
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.
Also issued online.
Indexes: Vols. 15-19, 1950/51-1954/55, in v. 19.
Vol. 47, no. 1 (1983)19920824 Notice not published Printed on acid-free paper