Gaya APA
ERICKSON, D, E.
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Microcomputers on the farm:
(
2nd.ed.)
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Ames:
Iowa State University Press.
Gaya MLA
ERICKSON, Duane, E..
"Microcomputers on the farm:".
2nd.ed.
Ames:
Iowa State University Press,
1990.
Buku.