Ola, S. A. (1983). Tropical soils of Nigeria in engineering practice. A.A. Balkema ; Distributed in USA & Canada by MBS.
Citace podle Chicago (17th ed.)Ola, S. A. Tropical Soils of Nigeria in Engineering Practice. Rotterdam : Salem, NH, USA: A.A. Balkema ; Distributed in USA & Canada by MBS, 1983.
Citace podle MLA (8th ed.)Ola, S. A. Tropical Soils of Nigeria in Engineering Practice. A.A. Balkema ; Distributed in USA & Canada by MBS, 1983.
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