Moscas zancudos y, ratas propagan y causan enfermedades = flies mosquitoes and rats spread disease.

Bibliographic Details
Corporate Author:	Texas. Department of Health
Format:	Book
Language:	English Spanish
Published:	[Austin] : [The Dept.], [1980?]
Subjects:	Rats > Control. Flies > Control. Mosquitoes > Control.

Evans: Texas Documents (Annex 5th floor)