The story of yang-yin
Subtitle: the Chinese symbol adopted for the Asten dryer felt trademark.
Publisher: Asten-Hill mfg. co.; Asten-Hill ltd.
Published: 1940
Place of publication: Philadelphia, Pa; Valleyfield, Que., Can
Language: eng
Number of pages: 22
Subjects: Trademarks -- United States.
Other titles: Asten dryer felt trademark.
Notes: Bibliography: 22d leaf.
Double leaves, Chinese style.