Punjab Agricultural University, Ludhiana, Available Volumes: NULL, Year: 2004 Andhra University, Waltair, Available Volumes: Vol.13-22,1969-1978 Birla Institute of Technology and Science, Pilani, Available Volumes: Vol.1965-76 Punjab Agricultural University, Ludhiana, Available Volumes: Vol.10,1966;Vol.1966;Vol.12-,1968-
