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Freshwater snails collected from Mae Lao agricultural basin: (A) Trochotaia trochoides; (B) Filopaludina doliaris; (C) F. martensi martensi; (D) F. sumatrensis polygramma; (E) Bithynia funiculata; (F) B. siamensis goniomphalos; (G) B. s. siamensis; (H) Pomacea canaliculata; (I) Clea helena; (J) Melanoides tuberculata; (K) Lymnaea auricularia; (L) Corbicula javanica. Scale bar=0.5 cm.
