Andhra University, Waltair, Available Volumes: Vol.48,1967;Vol.50,1969 Birla Institute of Technology and Science, Pilani, Available Volumes: Vol.48-50,1967-69 Punjab Agricultural University, Ludhiana, Available Volumes: Vol.49-50,1968-1979 Panjab University, Chandigarh, Available Volumes: Vol.44-50,1963-1969
