TY - BOOK ID - 134694984 TI - Soil erosion and the loss in productivity : an example of the terril soil series in Minnesota AU - Hao Wen, Frank AU - Easter, K. William PY - 1987 PB - Saint-Paul University of Minnesota. Agricultural experiment station DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:134694984 AB - ER -