Changing technology and employment in agriculture, by John A. Hopkins

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Changing technology and employment in agriculture, by John A. Hopkins

John A. Hopkins, Etats-Unis

Autre Première publication : 1941

Éditions (1)

Changing technology and employment in agriculture, by John A. Hopkins

Changing technology and employment in agriculture, by John A. Hopkins

U.S. government printing office ((Washington,)) · 1941