052459748

Effects of low and high external input agriculture on soil microbial biomass and activities in view of sustainable agriculture : fertilization systems in organic farming (concerted action AIR3-CT94-1940) ; proceedings of the second meeting in Oberwil (Switzerland), September 15th to 16th, 1995 / [Research Institute of Organic agriculture]. Ed. by Paul Mäder ...

Mäder, Paul [Hrsg.]

Oberwil [u.a.] : Research Inst. of Organic Agriculture [u.a.], 1995

78 S. : graph. Darst.

Literaturangaben

3-906081-00-1