International Biological Programme, Povoledo, D., & Golterman, H. L. (1975). Humic substances, their structure and function in the biosphere: Proceedings of an international meeting held at Nieuwersluis, the Netherlands, May 29-31, 1972. Centre for Agricultural Pub. and Documentation.
Chicago-Zitierstil (17. Ausg.)International Biological Programme, D. Povoledo, und H. L. Golterman. Humic Substances, Their Structure and Function in the Biosphere: Proceedings of an International Meeting Held at Nieuwersluis, the Netherlands, May 29-31, 1972. Wageningen: Centre for Agricultural Pub. and Documentation, 1975.
MLA-Zitierstil (9. Ausg.)International Biological Programme, et al. Humic Substances, Their Structure and Function in the Biosphere: Proceedings of an International Meeting Held at Nieuwersluis, the Netherlands, May 29-31, 1972. Centre for Agricultural Pub. and Documentation, 1975.