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In plant morphology , Rolf Sattler developed a process morphology ( dynamic morphology ) that overcomes the structure / process ( or structure / function ) dualism that is commonly taken for granted in biology .
 Rolf Sattler
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rolf Sattler