Description
Published:Vol. PE-1, no. 1 (Jan. 1986)-v. PE-2, no. 4 (Oct. 1987) ; vol. 3, no. 1 (Jan, 1988)-
Item Description:Title from cover.
Physical Description:volumes : illustrations ; 28 cm
Available in microfiche and microfilm and on the Web.
Publication Frequency:Monthly, <Feb. 2013->
ISSN:0885-8993
1941-0107