000 00296nam a2200121Ia 4500
008 170101s1977 xx 000 0 und d
082 _a630 DAV
100 _aDavidson Joan
245 0 _aConservation and Agriculture
260 _bJong Wiley & Sons.
_c1977
300 _a252 p.
942 _2ddc
_cB
999 _c619616
_d619616