Carl Sprengel

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1	Thaer 200 years at Möglin (Germany) Add to Reading List Source URL: horizon.documentation.ird.fr Language: English - Date: 2013-10-16 14:11:40 Land management Albrecht Thaer Carl Sprengel Celle Crop rotation Soil Humus Organic farming Agriculture Sustainable agriculture Sustainability
2	Willdenowia 31 – [removed] Add to Reading List Source URL: www.bgbm.org Language: English - Date: 2010-02-11 05:56:39 Christian Konrad Sprengel Kurt Polycarp Joachim Sprengel Sprengel University of Halle-Wittenberg Ernst Ludwig Heim Carl Ludwig Willdenow Biology Phycologists Botany