000 00278 a2200121 4500
080 _a519.28
_bI 61 P
245 1 _aProceedings
_bVol 2
260 _aLudhiana
_bPunjab Agricultural University
_c1981
650 _aSystem Theory
100 _a
_d
300 _a81 p.
901 _a147205
999 _c66296
_d66296