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- [4] TRACE-METAL ANALYSIS OF SEWAGE-SLUDGE AND SOILS IN BAHRAIN WATER AIR AND SOIL POLLUTION, 1990, 51 (1-2): : 147 - 152
- [6] INFLUENCE OF MANURING RYEGRASS (TETRONE) WITH SEWAGE-SLUDGE ON THE TRACE-ELEMENT AND MAGNESIUM CONTENTS, AND ON THE AMINO-ACID-COMPOSITION LANDWIRTSCHAFTLICHE FORSCHUNG, 1980, 33 (04): : 365 - 375
- [7] IMPROVING OF PEAT SOILS BY SEWAGE-SLUDGE 8TH INTERNATIONAL PEAT CONGRESS, SECTIONS 1-4, 1988, : C164 - C170