APA (7th ed.) Zitazioa
Kollbrunner, K. F. (1950). Steel, high class structural material for engineering. Leemann.
Chicago Style (17th ed.) Zitazioa
Kollbrunner, Kurt Fritz. Steel, High Class Structural Material for Engineering. Zurich: Leemann, 1950.
MLA (9th ed.) Zitazioa
Kollbrunner, Kurt Fritz. Steel, High Class Structural Material for Engineering. Leemann, 1950.
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