9789401062022 | Reprint edition (Springer Verlag, October 13, 2012), cover price $259.00 | also contains Nitrogen Fixation With Non-Legumes: Proceedings of the 7th International Symposium on Nitrogen Fixation With Non-Legumes, Held 16-21 October 1996 in Faisalabad, Pakistan | About this edition: Diazotrophic bacteria convert atmospheric nitrogen to plant-useable form and this input of nitrogen through biological fixation is of great agronomic importance.

9781402006203 | Kluwer Academic Pub, December 1, 2002, cover price $359.00

9780792347477 | Kluwer Academic Pub, November 1, 1997, cover price $55.01 | About this edition: This text looks at the advances in understanding symbiotic Rhizobium-legume interactions at the molecular level, the discovery of endophytic interactions of nitrogen-fixing organisms with non-legumes and the ability to introduce new genes into rice through transformation.

9780792345145, titled "Opportunities for Biological Nitrogen Fixation in Rice and Other Non-Legumes: Papers Presented at the Second Working Group Meeting of the Frontier Project on Nitrogen Fixation in Rice Held at the National Institute for biotechno" | Kluwer Academic Pub, October 1, 1997, cover price $299.00 | About this edition: During the next 30 years, farmers must produce 70% more rice than the 550 millions tons produced today to feed the increasing population.