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  • Author or Editor: L. S. Ritchie x
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The Incubation Period of the Eggs of Oncomelania Nosophora

Yuri Otori
,
L. S. Ritchie
, and
G. W. Hunter III
Volume/Issue:
Volume 5: Issue 3
DOI:
https://doi.org/10.4269/ajtmh.1956.5.559
Publication Date:
01 May 1956
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Epidemiological Study on Schistosomiasis Japonica in Formosa

H. F. Hsü
,
S. Y. Li Hsü
, and
L. S. Ritchie
Volume/Issue:
Volume 4: Issue 6
DOI:
https://doi.org/10.4269/ajtmh.1955.4.1042
Publication Date:
01 Nov 1955
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Studies of Schistosomiasis in Primates: Observations on Acquired Resistance (Progress Report)

David H. Naimark
,
A. S. Benenson
,
J. Oliver-González
,
D. B. McMullen
, and
L. S. Ritchie
Volume/Issue:
Volume 9: Issue 4
DOI:
https://doi.org/10.4269/ajtmh.1960.9.430
Publication Date:
01 Jul 1960
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The Possible Effects of pH and Specific Gravity on the Ether-Sedimentation Procedure in Concentrating Eggs and Cysts

L. S. Ritchie
,
S. Lin
,
A. P. Moon
,
L. P. Frick
,
J. E. Williams
,
S. Asakura
, and
Y. Hishinuma
Volume/Issue:
Volume 9: Issue 4
DOI:
https://doi.org/10.4269/ajtmh.1960.9.444
Publication Date:
01 Jul 1960
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Repopulation Control of Oncomelania Nosophora by Molluscicidal Applications against Juvenile Snails through the Medium of Irrigation Water

James E. Williams
,
Y. Otori
,
A. P. Moon
,
L. P. Frick
, and
L. S. Ritchie
Volume/Issue:
Volume 6: Issue 2
DOI:
https://doi.org/10.4269/ajtmh.1957.6.304
Publication Date:
01 Mar 1957
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The Penetration-Time for the Cercariae of Schistosoma Japonicum

Chiatung Pan
,
R. R. Williams
, and
L. S. Ritchie
Volume/Issue:
Volume 3: Issue 1
DOI:
https://doi.org/10.4269/ajtmh.1954.3.136
Publication Date:
01 Jan 1954
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A Modification of the Formol-Ether Concentration Technique for Increased Sensitivity in Detecting Schistosoma Mansoni Eggs

Wilda B. Knight
,
Robert A. Hiatt
,
Barnett L. Cline
, and
Lawrence S. Ritchie
Volume/Issue:
Volume 25: Issue 6
DOI:
https://doi.org/10.4269/ajtmh.1976.25.818
Publication Date:
01 Nov 1976
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Studies on Schistosomiasis

VII. Observations on Some Surfactants for Dispersing Insoluble Molluscicides

Robert E. Freytag
,
G. W. Hunter III
, and
L. S. Ritchie
Volume/Issue:
Volume 4: Issue 6
DOI:
https://doi.org/10.4269/ajtmh.1955.4.1119
Publication Date:
01 Nov 1955
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Epidemiology of Amebiasis: Possible Influence of Water Supply, Coincident with Diverse Features of Terrain, on the Occurrence of Intestinal Protozoa

Dale E. Wykoff
,
J. R. C. Fonseca
, and
L. S. Ritchie
Volume/Issue:
Volume 4: Issue 3
DOI:
https://doi.org/10.4269/ajtmh.1955.4.465
Publication Date:
01 May 1955
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The Distribution of the Snail Oncomelania nosophora, Intermediate Host of Schistosoma japonicum, Along the Tone River, Japan

L. S. Ritchie
,
G. W. Hunter III
,
K. Nagano
,
C. Pan
,
J. McConnaughey
,
C. Knox
,
M. Shimizu
,
S. Asakura
, and
Y. Hishinuma
Volume/Issue:
Volume 2: Issue 5
DOI:
https://doi.org/10.4269/ajtmh.1953.2.915
Publication Date:
01 Sep 1953
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