?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Primawan%2C+Augustinus+B.&rft.aulast=Primawan&rft.aufirst=Augustinus+B.&rft.title=Nutrition+control+in+nutrient+film+technique+hydroponic+system+using+fuzzy+method&rft.date=2024&rft.genre=proceeding