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100 0 _aWORTMAN, SterlingCUMMINGS, Ralph W.
245 1 0 _aTo feed this world :
260 _aBaltimore :
_bJohn Hopkins Press,
_c1978.
300 _axiv,440 p. ; 25 cm.
650 0 _afood supplyfood supply - developing countriesagriculture - developing countries.
908 _a070719
999 _c2689
_d2689