This guide will help readers recognise the symptoms of ill health in trees and understand their general significance. This guide provides 140 photographs of symptoms for more than 50 tree species to be used as a basis for demonstrating the effects of pest (biotic) and non-living (abiotic) influences on tree health.
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On behalf of Parque Nacional Nahuel Huapi I would like to thank NHBS. The book will be very useful for my students.
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Wildlife, science and conservation since 1985