Description
Published:v. 20- Feb. 1941-
Physical Description:volumes : illustrations, portraits, maps (part folded), tables, diagrams ; 24-26 cm
Publication Frequency:Bimonthly
ISSN:0096-8692
0270-5869
Finding Aid:Vols. 1-25, 1922-winter 1946/47. 1 v. (Includes index to the journal under its earlier title); Vols. 36-45, 1957-66. 1 v.