1650099. GERALD W OLSON Soils and the environment: a guide to soil surveys and their applications/ Gerald W Olson.- 1st.- New York: Chapman and Hall, 1981; 178p.. ISBN: 0412237504 (soil survey; ) |Mô tả đất; Đất; | DDC: 631.47 /Nguồn thư mục: [SCTHU]. |