Bakker, K. (2000). Soil retaining structures development of models for structural analysis Klaas Jan Bakker. A.A. Balkema.
Lua i Stíl Chicago (17ú heag.)Bakker, Klaas. Soil Retaining Structures Development of Models for Structural Analysis Klaas Jan Bakker. A.A. Balkema, 2000.
Lua MLA (8ú heag.)Bakker, Klaas. Soil Retaining Structures Development of Models for Structural Analysis Klaas Jan Bakker. A.A. Balkema, 2000.
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