[ON THE PRESENCE OF FREE PURINES IN VINEYARD SNAILS (HELIX  POMATIA L.)].
D000818:Animals; D006147:Guanine; D011687:Purines; D012106:Research; D012908:Snails; D014970:Xanthines
D011687:Purines; D014970:Xanthines; D006147:Guanine; C030985:purine
EXPERIMENTAL LAB STUDY; GUANINE; PURINES; SNAILS; XANTHINES