TY - BOOK TI - Biology and Ecology of Nitrogen: Proceedings of a Conference DO - 10.17226/20509 PY - 1969 UR - https://nap.nationalacademies.org/catalog/20509/biology-and-ecology-of-nitrogen-proceedings-of-a-conference PB - The National Academies Press CY - Washington, DC LA - English KW - KW - Earth Sciences ER -