2024-03-29T23:46:38Z
https://oai.zbmath.org/v1/
oai:zbmath.org:2560520
0001-01-01T00:00:00
03
JFM
Ackermann, W., Dr. (Burgsteinfurt)
Ćukasiewicz, J.; Tarski, Alfred
1930
2560520
German
https://zbmath.org/02560520
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C. R. Soc. Sc. Varsovie 23, 30-50 (1930).
03B05
Investigations into the sentential calculus
j