Impact Factor
2.74
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.
Some summaries in French, German, and Russian, 1928-July 1936.
Vol. 118, no. 2 (1991)19921002 Notice not published Printed on acid-free paper