WOLFER, K., & WOLFER, K. (1971). Elastically Supported Beams. Bauverlag, c.
Lua i Stíl Chicago (17ú heag.)WOLFER, Karl-Heinz, agus Karl-Heinz WOLFER. Elastically Supported Beams. Bauverlag, c, 1971.
Lua MLA (8ú heag.)WOLFER, Karl-Heinz, agus Karl-Heinz WOLFER. Elastically Supported Beams. Bauverlag, c, 1971.
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