Halstead, Bruce W., Paralytic shellfish poisoning / Bruce W. Halstead in collaboration with E.J. Schantz. - Geneva : World Health Organization, 1984. - 60 pages : illustrations ; 21cm. - WHO offset publication no.79 . Bibliography: p.48-56 ISBN: 9241700793 Subjects--Topical Terms: Paralytic shellfish poisoning.Poisonous shellfish.