Articles: on Philippine Mosquitoes, Xi. The Species at the Manila International Airport and Its Environs With Notes on Their Medicai Importance (Diptera: Culicidae) / Ruben G. Basio, Amador V. Corcega and Mauro E. Madriaga -- Ecology, Bionomics and Control of Aedes (Finlaya) Poicilius Theobald, (Diptera:culicidae) Enrique Schoenig, Svd -- a Survey of Rats in the Ports and Airports of Manila / Jose C. Castillo and Jesus C. Azurin -- a Preliminary Study on the Food Preferences of Siganus Concatenata (Cuvier and Valenciennes) / Hein Von Westernhagen -- Some Aspects of the Population Biology of the Guppy (Poecilia Reticulata Peters) in Lahug Creek, Cebu City / James Miller -- the Economic Importance of Silut Bay to the Local Population / James Miller -- the Intrusion of Sea Water Into the Ground Water of Cebu City / Wilhelm Bruell -- Glass Blowing for Educational and Research Laboratories (Part Vii) / Wilhelm Bruell

Thesis Abstracts: the Incidence of Four Endoparasitic Worms Among Livestock Slaughtered at the Cebu City Abattoir / Carmen Reynes - Fortunato -- a Preliminary Survey of Chaetognatha in Hilutangan Channel, Cebu / Dolores Jumao-as -- Individual Life History Studies of Laboratory Culture of the Philippine Planarian, Dugesia Atomi Hymanae (Sivickis) / I. L. F. Kotico -- Biotic Community Inside the Sponge Laxosuberites Sp. (Porifera: Demospongiae) / F. A. Jimenez -- Report on Lepidothera Research.

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