TALWAR, C LSAWHNEY, C P1959-04-012009-05-291959-04-012009-05-291959-04-01TALWAR CL, SAWHNEY CP. Rh frequency in Punjab (India). Indian Journal of Medical Sciences. 1959 Apr; 13(4): 324-5http://imsear.searo.who.int/handle/123456789/67880engRh-Hr Blood-Group SystemJournal Article