| Author: | Hopkins, Cyril G. (Cyril George), 1866-1919 |
| Subject: | QR, SB, Nitrogen-fixing microorganisms, Nitrifying bacteria |
| Format: | Text |
| Date issued: | 2018 |
| Language: | English |
| Publisher: | Project Gutenberg, |
| Rights: | Public domain in the USA. |
| Download link: | Nitrogen Bacteria and Legumes : With special reference to red clover, cowpeas, soy beans, alfalfa, and sweet clover, on Illinois soils [electronic resource] / Cyril G. Hopkins |