1 | Odum EP, 2004. Ecology. Library of Congress Catalog Card. ISBN: 0534420664 Cengage Learning. |
2 | Coleman DC , Crossley DA, Hendrix PF, 2004. Fundamentals of soil ecology. 2nd ed. ISBN 0-12-17972. |
3 | Lichtfouse E (Ed), 2011. Alternative Farming Systems,Biotechnology, Drought Stress and Ecological Fertilisation. Springer Netherlands, Netherlands. |
4 | Collins WW, Qualset CO, 1998. Biodiversity in agroecosystems. CRC Press LLC. Lewis, USA. |
5 | Roger MJR, 2003. Handbook of Plant Ecophysiology Techniques. Springer Netherlands, Netherlands. |
6 | Cooke BM, Kaye B, 2006. The Epidemiology of Plant Diseases. Springer, Netherlands. |