Birla Institute of Technology and Science, Pilani, Available Volumes: 1972-1978 Rashtrasant Tukadoji Maharaj Nagpur University, Available Volumes: Vol.4,No.1-4,1963; Vol.5,No.1-4,1964 Panjab University, Chandigarh, Available Volumes: Vol.3,1962;Vol.6,1965