Descripció
Publicat:Vol. 7, no. 1 (Feb. 1989)-v. 32, no. 4 (Dec. 1998).
Descripció física:26 v. : ill. ; 24 cm.
Available also by subscription via the World Wide Web.
Periodicitat de publicació:12 no. a year, <Jan.-Apr. 1992>-Dec. 1998
Format:System requirements: Internet connectivity, World Wide Web browser, and Adobe Acrobat reader.
Mode of access: World Wide Web.
ISSN:0923-0750
0167-7861
Accés:Online full text access is restricted to licenced institutions.