Land subsidence; proceedings of the Tokio symposium ... - Paris : UNESCO, 1970 - 2 v. : ilus. ; gráfs. - Studies and reports in hydrology ; 8 . - Studies and reports in hydrology ; 8 . LCCN: 45886 Subjects--Topical Terms: Mecánica de suelos.Suelos--Estabilización. Dewey Class. No.: 631.43 / U5