TY - BOOK AU - BLUM, WINFRIED E.H TI - PROBLEMS OF SOIL CONSERVATION: STUDY ON THE EFFECTS OF GLOBAL AND LOCAL IMPACTS ON SOILS , WITH SPECIAL REFERENCE TO SOIL EROSION, SOIL ACIDICATION, SOIL POLLUTION BY HEAVY METALS AND SOIL OVER-CONSUMPTION THROUGH INFRASTRUCTURAL DEVELOPMENT SN - 9287116296 AV - S622 .B58 1988 PY - 1988/// CY - STRASBOURG PB - COUNCIL OF EUROPE N1 - REFERENCE COPY ER -