000 00289nam a2200121Ia 4500
008 170101s1950 xx 000 0 und d
082 _a581.21 H91
245 0 _aHunger signs in crops: a symposium
250 _a3rd ed
260 _bWashington
_c1950
300 _axvi, 390p
942 _2ddc
_cB
999 _c5215
_d5215