000 00328nam a2200133Ia 4500
008 130223s9999 xx 000 0 und d
100 _aHalderman, A.D.
245 _aIrrigation when? How much? How?
260 _aArizona
260 _c1977
440 _aNo. A-20R; Arizona Agricultura
901 _pS29309
942 _cB
_2udc
999 _c126136
_d126136