Box 1 Electronic databases searched (hosts given in parentheses)
ASSIA (CSA)ERIC (CSA/Dialog)
British Library catalogueIndex to theses
Business Periodicals PremierMedline (Ovid/Dialog)
Conference Papers Index (CSA)NTIS (free version)
COPACPsycinfo (Dialog/Ovid)
Econlit (Dialog/Ovid)Social Sciences Citation Index (MIMAS)
Electronic Collections Online (OCLC firstsearch)Sociological abstracts (CSA)
Embase (Dialog)Zetoc