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Intestinal helminths in Akaki town, with special emphasis on the epidemiology of Schistosoma mansoni.

• B Mamo, B. Assefa, C. T. Lo
• Ethiopian medical journal
• 1989

Two thousand, three hundred and nine stool specimens from about 5% of the residents of Akaki were examined by Kato thick smear technique for helminthic infections. The prevalence of various parasites… (More)

Behavioural responses to amino acids and related compounds, including propionic acid, by adult Biomphalaria glabrata (Say), a snail host of Schistosoma mansoni.

• Jochen Dipl.-Ing. Thomas, B. Assefa, C. D. Cowley, J. Ofosu-Barko
• Comparative biochemistry and physiology. C…
• 1980

Abstract 1. Two types of diffusion olfactometers, designed to study chemoreception by adult, sexually mature, Biomphalaria glabrata , and capable of maintaining steep chemical gradients for the… (More)

Behavioural responses to amino acids by juvenile Biomphalaria glabrata, a snail host of Schistosoma mansoni

• Joshua D. Thomas, B. Assefa
• 1979

Abstract 1. A diffusion olfactometer, designed to study chemoreception by juvenile Biomphalaria glabrata , and capable of maintaining a steep chemical gradient for the duration of the experiment is… (More)

Symbolic estates as determining factors in leisure preferences of minorities in the East Bay area of Northern California (or why blacks do not use regional parks).

• B. Assefa
• 1988

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