1. A respiring apparatus for the behaviour of organic material;Cappaert,1976
2. Different materials which can be used as compost;Penninck;Acta Horticulture,1984
3. Substraten voor bloemisterijgewassen;Verdonck,1986
4. The determination of optimal parameters for the composting of solid organic wastes;Verdonck,1982
5. Compost as a growing medium for horticultural plants.;Verdonck,1986