The La Roche sites Hoffman, John Jacob, 1931- Hoffman, John Jacob, 1931- creator text bibliography nbu Lincoln, Neb 1968 monographic eng
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 by J. J. Hoffman. Editor: Jerome E. Petsche. Bibliography: p. 94-97. n-us-sd Salvage archaeology -- South Dakota Salvage archaeology -- South Dakota La Roche site E78.S63 H59 970.4/83/55 Publications in salvage archeology ; no. 11 79600250 //r892 690709 lce01151745