Gaya APA
The Illustrated science and invention encyclopedia vol. 1 : Abacus - archaeological techniques. (1983).
USA:
H.S.Stuttman Inc..
Gaya MLA
The Illustrated science and invention encyclopedia vol. 1 : Abacus - archaeological techniques.
1th edition.
USA:
H.S.Stuttman Inc.,
1983.
Text.
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