University of Kerala, Thiruvanathapuram, Available Volumes: Vol.4,1973 Punjab Agricultural University, Ludhiana, Available Volumes: Vol.4,1973;Vol.6-7,1975-1976;Vol.13-15,1978-1979;Vol.17-20,1982-1989 Panjab University, Chandigarh, Available Volumes: Vol.5,1974
