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In all aspects of the program POND ANALYST
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The derivation of the nutrient (P) and reaction number (R) in terms of water quality, which plays a crucial role in POND ANALYST's plant selection, is presented in detail in »Schwimmteiche - Planen, anlegen, richtig bepflanzen« Claudia Schwarzer & Udo Schwarzer, published by Ulmer in 2008 (ISBN 978-3-8001-5345-9).