Introductory soil science : a study guide and laboratory manual /
Johnson, Leon J.
Introductory soil science : a study guide and laboratory manual / Leon J. Johnson. - New York : The MacMillan Company, 1979. - xiii, 289 pages : illustrations ; 28 cm.
Soil science.
Introductory soil science : a study guide and laboratory manual / Leon J. Johnson. - New York : The MacMillan Company, 1979. - xiii, 289 pages : illustrations ; 28 cm.
Soil science.