1. Duck (textile). Physical and chemical changes produced in bleached cotton duck by Chaetomium globosum and Spirochaeta cytophaga [with list of literature cited]; by Ruth Elmquist Rogers, Helen G. Wheeler, and Harry Humfeld. Bookmark Corporate/Agency Authors: Home Economics Bureau and Biological Survey Bureau Publisher: Home Economics Bureau Date: Mar. 1940 SuDoc number: A 1.36:726