Impact Factor
1.62
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.
Microfilm. v. 1 (1946)-29 (1960). 26 microfilm reels : negative ; 35 mm.