Description
Published:Vol. 430, no. 1878 (July 1990)-v. 451, no. 1943 (8 Dec. 1995).
Item Description:Title from cover.
Physical Description:22 v. : ill. ; 26 cm.
Also available via the World Wide Web; access restricted to subscribers of JSTOR.
Publication Frequency:Monthly
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ISSN:0962-8444
0080-4630
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