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Auteur U.S. DEPARTMENT OF THE INTERIOR. BUREAU OF RECLAMATION |
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U.S. DEPARTMENT OF THE INTERIOR. BUREAU OF RECLAMATION | U.S. department of the interior. Bureau of reclamation | 1975Information is presented on prestressed concrete. Benefication of aggregate by heavy-media separation, elastic fractionation and hydraulic jugging and benefication of sand through attrition are discussed. Currently a reexamination of the effect [...]