Trend of the cheese industry in the United States and other countries, simple charts with interpretations. T. R. Pirtle. (U.S. Agric. dept. Department circular 71) 24p pa ’19
Chelan national forest
The land of beautiful water. (U. S. Agriculture dept. Department circular 91) 16p pa ’20
Child-labor
Industrial instability of child workers; a study of employment certificate records in Connecticut. Robert Morse Woodbury. (U.S. Children’s bur. Publication 74) 86p pa ’20
Children
Care and hygiene
Child-welfare programs; study outlines for the use of clubs and classes. (U.S. Children’s bur. Bur. pub. no. 73) 35p pa ’20
Child-welfare special; a suggested method of reaching rural communities. (U.S. Children’s bur. Bur. pub. no. 69) 18p pa ’20
Eyesight of school children; defective vision as related to school environment, and methods of prevention and correction. J. H. Berkowitz. (U.S. Education bur. Bul. 1919, no. 65) 128p pa ’20