Budhiraja, R DBala, SKaur, A HGarg, K N1980-07-012009-06-011980-07-012009-06-011980-07-01Budhiraja RD, Bala S, Kaur AH, Garg KN. A simple technique of screening narcotic analgesics. Indian Journal of Physiology and Pharmacology. 1980 Jul-Sep; 24(3): 243-4http://imsear.searo.who.int/handle/123456789/107288engAnalgesics, Opioid --pharmacologyAnimalsDrug Evaluation, Preclinical --instrumentationFemaleHardness Tests --instrumentationMalePressureRatsLetter