00555cam a2200181 4500 547831536 TxAuBib 20120329120000.0 120328s2011||||||||||||||||||||||||und|u 9781601730190 1601730195 TxAuBib Zimmer, Gary F. & Zimmer-Durand. Advanced Biological Farming : Practicing Mineralized, Balanced Agriculture to Improve Soils & Crops. Austin, Texas : Acres U.S.A., 2011. 241 pages. 20120329.