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111
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112
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113
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114
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115
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116
Mechanisation and employment in agriculture case studies from four continents.
Publicado em 1973Livro -
117
Mechanisation and employment in agriculture case studies from four continents.
Publicado em 1973Livro -
118
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119
A framework for research on the economics of farm mechanization in developing countries
Publicado em 1973Livro -
120


