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| 3к1 | | Enge | Engels, Frederick.
The origin of the familly, private property and the state [Текст] : In the light of the researches of L. H. Morgan / F. Engels; With introd. and notes by E. B. Leacock. — New York : International, 1981. — 285 p. | |
| | ISBN 0-7178-0308-4; 0-7178-0359-7 | |
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