Impact Factor
3.28
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.21(1911)-90(1949). 29 microfilm reels : negative ; 35 mm.
Indexes: Vols. 1 (1891)-150 (1973). 1 v. (Includes index to the journal under its earlier titles).
(1989)19890816 Notice published Printed on acid-free paper