Proctor, R. V., & White, T. L. (1946). Rock tunneling with steel support. Youngstown: The Younstowne Printing.
Citación estilo ChicagoProctor, R. V., and T. L. White. Rock Tunneling With Steel Support. Youngstown: The Younstowne Printing, 1946.
Cita MLAProctor, R. V., and T. L. White. Rock Tunneling With Steel Support. Youngstown: The Younstowne Printing, 1946.
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