Institute, A. (1969). Kwic index of rock mechanics literature. Volume I. Petroleum Engineers Inc.
Lua i Stíl Chicago (17ú heag.)Institute, American. Kwic Index of Rock Mechanics Literature. Volume I. Petroleum Engineers Inc, 1969.
Lua MLA (8ú heag.)Institute, American. Kwic Index of Rock Mechanics Literature. Volume I. Petroleum Engineers Inc, 1969.
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