BOWLES, J. E., & BOWLES, J. E. (1968). Foundation Analysis And Design / Joseph E. Bowles. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)BOWLES, Joseph E., agus Joseph E. BOWLES. Foundation Analysis And Design / Joseph E. Bowles. McGraw-Hill, 1968.
Lua MLA (8ú heag.)BOWLES, Joseph E., agus Joseph E. BOWLES. Foundation Analysis And Design / Joseph E. Bowles. McGraw-Hill, 1968.
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