Nitrogen-fixing organisms
Prasad,A.B &Vaishampayan, A(editor).
Nitrogen-fixing organisms - 1994. - Jodhpur: Scientific publishers. - 338.
8172330847
Chemistry, Nitrogen.
546.711
Nitrogen-fixing organisms - 1994. - Jodhpur: Scientific publishers. - 338.
8172330847
Chemistry, Nitrogen.
546.711