Description
Published:Vol. 1, no. 1 (June 1915)-v. 37, no. 4 (May 1951); new ser., v. 1, no. 1 (June 1951)-new ser., v. 20, no. 10 (Nov. 1968); ser. 3, v. 1, no. 1 (Feb. 12, 1969)-v. 22, no. 12 (Nov. 7, 1990)
Item Description:Cover title.
Physical Description:v. : ill. ; 27-43 cm.
Publication Frequency:Published every 3 weeks, July 1981-
ISSN:0038-3015