BHATIA, M LMISRA, R N1958-08-162009-05-311958-08-162009-05-311958-08-16BHATIA ML, MISRA RN. Mastoid surgery technique further improved. Journal of the Indian Medical Association. 1958 Aug; 31(4): 156-8http://imsear.searo.who.int/handle/123456789/99294engMastoid --surgeryJournal Article