Impact Factor
1.50
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: v. 1-25, 1936-69. 1 v; v. 26-43, 1970-86. 1 v.