Description
Published:Publication began with Sept. 1951.
Item Description:Cover title.
Issues prior to Jan./Feb. 1975 were classed: Y 3.At 7:45/ .
Issues prior to July-Aug. 1981 and after Jan./June 1994 were classed: Y 3.N 88:9/.
Issues between Sept.-Aug. 1981 and < >1994 were classed: E 1.93: .
Description based on: Volume 20-2 (Mar.-Apr. 1979).
Physical Description:volumes : illustrations ; 27 cm.
Publication Frequency:Quarterly, <Jan./Mar. 1986>-
ISSN:0029-5604
Finding Aid:Vols. 1-3, 1959-June 1962, in v. 3.