The seasonal incidence of infection of the snail Nassarius obsoletus (Say) with larval trematodes.
D000818:Animals; D049851:Gastropoda; D015994:Incidence; D010507:Periodicity; D012621:Seasons; D012908:Snails; D014200:Trematoda; D014201:Trematode Infections
PERIODICITY; SNAILS; TREMATODE INFECTIONS