Description
Published:Print issues designated v. EC-12, no. 1 (Feb. 1963) in v. EC-16, no. 6 (Dec. 1967).
Item Description:Description based on print version record.
Electronic resource.
Physical Description:Also issued in print.
Publication Frequency:Bimonthly
Format:Mode of access: World Wide Web.
ISSN:0367-7508