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World Health Organization Drug Information : Volume 12, No. 1, Year 1998, Pages 1-2: General Policy Issues

By World Health Organization

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Book Id: WPLBN0000037271
Format Type: PDF eBook
File Size: 0.2 MB
Reproduction Date: 2005

Title: World Health Organization Drug Information : Volume 12, No. 1, Year 1998, Pages 1-2: General Policy Issues  
Author: World Health Organization
Volume:
Language: English
Subject: Health., Public health, Wellness programs
Collections: Medical Library Collection, World Health Collection
Historic
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Publisher: World Health Organization

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Organization, W. H. (n.d.). World Health Organization Drug Information : Volume 12, No. 1, Year 1998, Pages 1-2. Retrieved from http://hawaiilibrary.net/


Description
Medical Reference Publication

Excerpt
The need for biological studies on the snail vectors of bilharziasis has been repeatedly emphasized (Olivier, 1955; McMullen & Harry, 1958). Olivjer (1955) stated: A study of snail biology set up as a continuing project in a variety of natural habitats would surely pay large dividends. Subjects to be investigated in this way should include population dynamics.. .. This paper reports on a study of the population dynamics of AlrstraIorbis glabratus, vector of Schistosoma nzansoni, as it occurs in swamp, stream, river, irrigation canal, lake and farm pond habitats in Puerto Rico. Periodic intervals of observation were planned for a minimum of two years. Continuing projects of this type for Australorbis and related species in different geographical areas and for varied habitats are certainly still too few. The chief contributors to this type of study include Olivier & Barbosa (1955j on Azcstralorbis in Brazil, LiCtar (1956) on Bio~nphnlnria in the Congo and Cridland (1957, 1958:) on Bionzplialaria in Uganda; in Puerto Rico, Pimentel & White (1959a),

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