Samples of casein plastic
1920-1960
Pendant: green casein in form of papyrus flower
1921-1940
Samples of casein plastic, c. 1920-1960.
1920-1960
Casein samples produced under the trade name Lactoid
1951-1960
Samples of casein plastic, c. 1920-1960.
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Samples book
1951-1961
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Polished sheet of green casein, one of two pieces
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Polished sheet of green casein, one of two pieces
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960
Sample of casein plastic
1920-1960