00534nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067100001800076245010900094260006900203300001000272440004400282650002200326700001600348Para_3927CHAP220125s[196    xx            000 0 und d  a202449  cCHAP  aHansen, R.  M  aSome relations of pocket gophers to rangelands on Grand Mesa, Colorado  /c R. M. Hansen, and A. L. Ward  a[Grand Mesa, Col.]  :b Colorado Agricultural Experiment Station  a22 p.  aColorado Agr. Exp. Sta. Tech. Bull.; 88  aPastizales  Tuzas  aWard, A. L.