has subject area agronomy degradation environmental science management soil soil biodiversity soil degradation soil fertility soil management soil organic matter soil retrogression and degradation soil type
keywords general agricultural and biological sciences general earth and planetary sciences general environmental science
Digital Object Identifier (DOI) 10.1111/J.1365-2389.1981.TB01708.X 10.1111/j.1365-2389.1981.tb01708.x