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