Description
Published:Began with issue for fiscal year 1971.
Item Description:Title from cover.
Volumes for fiscal year 1971-<fiscal year 1976> classed in HE 17.642: ; <fiscal year 1978-> classed in HE 3.63:.
Description based on: Fiscal year 1978.
Physical Description:volumes ; 28 cm.
Publication Frequency:Annual
ISSN:0193-4031