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„Predation and parasitism were viewed as being very similar in 65 % of GB and GE textbooks, while 35 % viewed parasitism as a type of predation.“ Bradford D. Martin, Ernest Schwab: Current Usage of Symbiosis and Associated Terminology. In: International Journal of Biology. Band 5, Nr. 1, 2013, S. 32–45, doi:10.5539/ijb.v5n1p32.
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