共 13 条
[1]
CRAMER L, 1921, KOLLOIDCHEMIE PHOTOG
[2]
CRAMER L, 1908, PHOTOGR KORRESP, P549
[3]
CRAMER L, 1922, NEGATIVENTWICKLUNG H
[4]
CRAMER L, 1923, PHOT IND
[5]
CRAMER L, 1923, PHOTOGR IND
[6]
FREUNDLICH H, KAPILLARCHEMIE, P165
[7]
FREUNDLICH H, 1910, GEDENKBOEK, P88
[8]
SPRING W, 1909, KOLLOID Z, V4, P161
[9]
SPRING W, 1910, KOLLOID ZTR, V6, P109
[10]
SPRING W, 1910, KOLLOID ZTR, V6, P164