000 00292 a2200121 4500
080 _a633.2(063)
_bI 61 P
245 1 _aProceedings
_cedited by J.A. Smith and V.W. Hays
260 _aColorado
_bWestview Press
_c1983
650 _aGrassland
100 _a
_d
300 _a877 p.
901 _a157081
999 _c85402
_d85402