Breimer, R. F. Guidelines for soil survey and land evaluation in ecological research / R. F. Breimer, A. J. van Kekem, H. van Reuler. - Paris : Unesco, 1986. - 124 p. : ill. ; 27 cm. Enclosed with 1 sheet of map kept at APD bearing the same call numbers. ISBN: 9231023667 Subjects--Topical Terms: Soil surveys.Land use, Rural--Evaluation.