Lessons in civics for the six elementary grades of city schools. Hannah Margaret Harris. (U.S. Education bur. Bul. 1920, no. 18) 110p pa ’20
Visualizing citizenship. Ina Clement. (New York city. Municipal reference library. Special report no. 4) 32p pa ’20 15c Municipal reference library, New York city
Citrus industry
Citrus—fruit growing in the gulf states. E. D. Vosbury. (U.S. Agriculture dept. Farmers’ bul. 1122) 46p pa ’20
Clearing of land
TNT as a blasting explosive. Charles E. Munroe & Spencer P. Howell. (U.S. Agriculture dept. Department circular 94) 24p pa ’20
Clothing
Selection and care of clothing. Laura I. Baldt. (U.S. Agric. dept. Farmers’ bul. 1089) 32p pa ’20
Coal
Safe storage of coal. H. H. Stock. (U.S. Mines bur. Technical paper 225) 10p pa ’20