Dd. Soejarto et al., THE AMERICAN-SOCIETY-OF-PHARMACOGNOSY INTERIM ANNUAL-MEETING - INTELLECTUAL PROPERTY-RIGHTS, NATURALLY DERIVED BIOACTIVE COMPOUNDS AND RESOURCE CONSERVATION - PROCEEDINGS OF AN INTERNATIONAL-SYMPOSIUM, SAN-JOSE, COSTA-RICA, OCTOBER 20-22, 1994 - PREFACE, Journal of ethnopharmacology, 51(1-3), 1996, pp. 9-10