000 00390nam a2200145Ia 4500
008 130223s9999 xx 000 0 und d
100 _aRoss, N.W., Rizzi, A.D.
245 _aTraining young walnut trees by the modified central-leader system
260 _aBerkeley
260 _c1975
300 _a0.5
440 _aNo. 2471; California Division
901 _pS26853
942 _cB
_2udc
999 _c135768
_d135768