Impact Factor
4.61
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.
Place of publication varies.
Supplements accompany some numbers.
Also issued online.
Microfilm. v. 17 (1968)-18 (1969). 2 microfilm reels : negative ; 35 mm.