The natural predators of mosquitoes are the bat, frog, spider, and others, ca. 1960
The natural predators of mosquitoes are the bat, frog, spider, and others, Produced by Beijing Slide Production Factory, Author Unknown, ca. 1960
About the Book
Intended for use in public lectures, these five transparencies—from a set of 27—were produced by the Beijing Slide Production Factory, ca. 1960, and warn of the harm done by pests to a healthy society. Often these slide sets came with explanatory booklets, but such booklets have been lost from this set, and the sponsoring organization is unknown. The slides encourage others two do their part in eliminating pests, most notably rats, and thus eliminating the diseases they spread.