Description
Published:Began with Jan. 1975.
Item Description:Cover title.
Issues prior to Nov. 1977 were classed: (Supt. of Docs.) ER 1.9:
Description based on: Volume 5, no. 1 (Jan. 1979).
Physical Description:volumes ; 28 cm
Publication Frequency:Monthly, with annual cumulative index
ISSN:0098-5104
0094-1042