Specialty Conference on Performance of Earth and Earth-Supported Structures Purdue University. (1972). Performance of earth and earth-supported structures: Proceedings of the Specialty Conference on Performance of Earth and Earth-Supported Structures, June 11-14, 1972, Purdue University, Lafayette. American Society of Civil Engineers.
Cita Chicago (17th ed.)Specialty Conference on Performance of Earth and Earth-Supported Structures Purdue University. Performance of Earth and Earth-supported Structures: Proceedings of the Specialty Conference on Performance of Earth and Earth-Supported Structures, June 11-14, 1972, Purdue University, Lafayette. N.Y.: American Society of Civil Engineers, 1972.
Cita MLA (8th ed.)Specialty Conference on Performance of Earth and Earth-Supported Structures Purdue University. Performance of Earth and Earth-supported Structures: Proceedings of the Specialty Conference on Performance of Earth and Earth-Supported Structures, June 11-14, 1972, Purdue University, Lafayette. American Society of Civil Engineers, 1972.