Srivastava, S PBhargava, K SNagar, A M1968-04-012009-05-311968-04-012009-05-311968-04-01Srivastava SP, Bhargava KS, Nagar AM. Retroperitoneal tumours. Journal of the Indian Medical Association. 1968 Apr; 50(7): 313-6http://imsear.searo.who.int/handle/123456789/97942engAdolescentAdultChildChild, PreschoolFemaleHumansMaleMiddle AgedRetroperitoneal NeoplasmsCase Reports