Ecology Workshop

Azospirillum: Genetics, Physiology, Ecology Workshop Held At The University Of Bayreuth, Germany July 1617, 1981 (Experientia Supplementum)

Azospirillum Ii: Genetics, Physiology, Ecology Second Workshop Held At The University Of Bayreuth, Germany September 67, 1983 (Experientia Supplementum)

Reclamation Of Western Surface Mined Lands: Workshop Proceedings March 1-3, 1976