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431	EUROPEAN HUMUS FORMS REFERENCE BASE A. Zanellaa, B. Jabiolb, J.F. Pongec, G. Sartorid, R. De Waale, B. Van Delfte, U. Graefef, N. Coolsg, K. Katzensteinerh, Add to Reading List Source URL: hal.archives-ouvertes.fr Language: English - Date: 2011-02-01 13:10:39 Pedology Organic gardening Soil horizon Humus World Reference Base for Soil Resources Organic matter Earthworm Humic acid Topsoil Soil Agriculture Composting
432	American Economic Review 2012, 102(4): 1477–1507 http://dx.doi=[removed]aer[removed] Add to Reading List Source URL: scholar.harvard.edu Language: English - Date: 2014-01-16 07:21:35 Environmental soil science Dust Bowl Erosion Soil Topsoil Black Sunday Surface runoff Drought Arable land Earth Environment Agriculture
433	Agroforestry Systems 52: 185–197, 2001.  2001 Kluwer Academic Publishers. Printed in the Netherlands. Add to Reading List Source URL: www.css.cornell.edu Language: English - Date: 2013-05-29 08:25:21 Botany Bactris Root Topsoil Arecaceae Brazil nut Tropical agriculture Agriculture Flora
434	Overview of Decontamination Projects Add to Reading List Source URL: www.jaea.go.jp Language: English - Date: 2012-08-27 01:17:23 Human decontamination Hygiene Safety Security Soil Topsoil Landscape Prevention Landscape architecture Civil defense
435	PDF Document Add to Reading List Source URL: www.ncagr.gov Language: English - Date: 2013-02-15 13:58:37 Land management Agricultural soil science Lawn care Organic gardening Topsoil Fertility Base-cation saturation ratio Soil Landscape architecture Agriculture
436	PDF Document Add to Reading List Source URL: jimmcafee.tamu.edu Language: English - Date: 2005-05-16 14:50:44 Landscape architecture Land management Water management Agricultural soil science Soil Drainage system Subgrade Irrigation Topsoil Transport Land transport Drainage
437	PDF Document Add to Reading List Source URL: icodel.org Language: English - Date: 2012-03-15 16:54:40 Organic farming Agricultural soil science Organic gardening Sustainable agriculture Agroecology Soil Cover crop Organic food Topsoil Agriculture Environment Land management
438	PDF Document Add to Reading List Source URL: simonbatterbury.net Language: English - Date: 2004-08-01 11:42:51 Agriculture Universal Soil Loss Equation Erosion Crop rotation Loess Wind erosion equation Topsoil Soil science Environmental soil science Soil
439	PDF Document Add to Reading List Source URL: www.cosis.net Language: English - Date: 2007-01-14 13:25:11 Helictotrichon Erosion Juncus acutus Topsoil Surface runoff Revegetation Bromus Environmental soil science Soil Earth