Authors: RATNASOORIYA HW PREMAKUMARA GAS

Citation: Hw. Ratnasooriya et Gas. Premakumara, PIPER BETLE LEAVES IMPAIRS MASCULINE SEXUAL-BEHAVIOR OF RATS, Medical science research, 24(5), 1996, pp. 303-306

Authors: PREMAKUMARA GAS RATNASOORIYA WD TILLEKERATNE LMV

Citation: Gas. Premakumara et al., ISOLATION OF A NONSTEROIDAL CONTRAGESTATIVE AGENT FROM SRI-LANKAN MARINE RED-ALGA, GELIDIELLA-ACEROSA, Contraception, 54(6), 1996, pp. 379-383

Authors: RATNASOORIYA WD PREMAKUMARA GAS ANANDA UVDS

Citation: Wd. Ratnasooriya et al., PROTECTION BY MURRAYA-KOENIGII LEAF EXTRACT AGAINST ETHANOL-INDUCED GASTRIC-LESIONS IN RATS, Medical science research, 23(1), 1995, pp. 11-13

Authors: PREMAKUMARA GAS RATNASOORIYA WD TILEKERATNE LMV

Citation: Gas. Premakumara et al., STUDIES ON THE POST-COITAL CONTRACEPTIVE MECHANISMS OF CRUDE EXTRACT OF SRI-LANKAN MARINE RED ALGAE, GELIDIELLA-ACEROSA, Contraception, 52(3), 1995, pp. 203-207

Authors: MADAWALA PG ARAMBEWELA LSR PREMAKUMARA GAS RATNASOORIA WD

Citation: Pg. Madawala et al., STUDIES ON THE SEDATIVE ACTIVITY OF CRUDE EXTRACT OF ROOT BARK OF RAUVOLFIA-CANESCENS ON RATS, Journal of ethnopharmacology, 42(1), 1994, pp. 63-65

Authors: RATNASOORIYA WD PREMAKUMARA GAS TILLEKERATNE LMV

Citation: Wd. Ratnasooriya et al., POST-COITAL CONTRACEPTIVE ACTIVITY OF CRUDE EXTRACTS OF SRI-LANKAN MARINE RED ALGAE, Contraception, 50(3), 1994, pp. 291-299