Impact Factor
4.66
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.
Print issues ceased with v. 166, no. 4 (Dec. 2014).
Also issued online.
v. 1 (Jan. 1926)-Will not microfilm; 20040413
Vol. 106, no. 1 (SEPT 1994)19950517 Notice not published Printed on acid-free paper