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- [2] VALUABLE BIOMATERIAL AND CLINICAL WASTE MUNCHENER MEDIZINISCHE WOCHENSCHRIFT, 1984, 126 (45): : A20 - A20
- [8] COMPOSTING CONVERTS WASTE INTO VALUABLE RESOURCES QUARTERLY-NEBRASKA AGRICULTURAL EXPERIMENT STATION, 1977, 24 (03): : 19 - 21
- [10] From waste of time to valuable resource International Water Power and Dam Construction, 2002, 54 (12): : 20 - 23