Childs, M. W. (1952). Yesterday today and tomorrow . The farmer takes a hand.
Citazione stile Chigago Style (17a edizione)Childs, Marquis W. Yesterday Today and Tomorrow . The Farmer Takes a Hand. United States : McArdle Book Division, 1952.
Citatione MLA (9a ed.)Childs, Marquis W. Yesterday Today and Tomorrow . The Farmer Takes a Hand. 1952.
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