แหล่งที่มาความรู้ภายนอก

1.https://krittika1929.wordpress.com/2016/08/26/asaaaua
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2.https://sites.google.com/a/srisawat.ac.th/animalinthesea/phuch-thale

3https://www.slideshare.net/ChalitaJommoon/ss-58285017

4.https://www.dekd.com/board/knowledge/3860433
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