Skarpe, Christina; Masunga, Gaseitsiwe; Aarrestad, Per Arild; Frost, Peter G.H.. Soil as Controller of and Responder to Elephant Activity. I: Elephants and savanna woodland ecosystems: a study from Chobe National Park, Botswana. Wiley-Blackwell 2014 ISBN 978-0-470-67176-4. s. 135-153 HINN NINA
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