000 00274 a2200121 4500
008 151002tMar.-Dec. 1991
245 _aJournal of Research
250 _aVol. 28 Nos.1-4
260 _aIndia
260 _bPunjab Agricultural University
260 _cMar.-Dec. 1991
942 _cBV
999 _c3312
_d3312