Fig. 1
Cellulose acetate microfilm of the 1946s collected in the Second Historical Archives of China: a The sample with microbubbles disease; b The sample without microbubbles disease
Fig. 1 | Heritage Science
Cellulose acetate microfilm of the 1946s collected in the Second Historical Archives of China: a The sample with microbubbles disease; b The sample without microbubbles disease
