Factors of soil formation : a fiftieth anniversary retrospective : proceedings of a symposium cosponsored by the Council on the History of Soil Science (S205.1) and Division S-5 of the Soil Science Society of America / organizing committee, Ronald Amundson, John Tandarich ; editorial committee, Ronald Amundson, Jennifer Harden, Michael Singer. (SSSA special publication ; no. 33)
Factors of soil formation : a fiftieth anniversary retrospective : proceedings of a symposium cosponsored by the Council on the History of Soil Science (S205.1) and Division S-5 of the Soil Science Society of America / organizing committee, Ronald Amundson, John Tandarich ; editorial committee, Ronald Amundson, Jennifer Harden, Michael Singer.