000 | 00578nam a2200217Ia 4500 | ||
---|---|---|---|
008 | 230518s9999 xx 000 0 und d | ||
040 | _cUDSM | ||
050 | _aHD2117.C56 | ||
100 | _aEvenson, Robert Edward | ||
245 | 0 | _aExtension, technology, and efficiency in agriculture in Sub-Saharan Africa | |
260 | _aNew Haven | ||
260 | _bYale University | ||
260 | _c1997 | ||
300 | _a105-119p. | ||
300 | _c28cm. | ||
500 | _aIncludes bibliographical references | ||
650 | _aAgriculture | ||
700 | _aill. | ||
942 | _2Library of Congress Library | ||
942 | _cBook | ||
999 |
_c7796 _d7796 |