Small Constitution of 1947 (Polish: Mała Konstytucja z 1947) was a temporary constitution issued by the communist-dominated Sejm (Polish parliament) of 1947-1952. It confirmed the practice of separation of powers and strengthened the Sejm. It was renewed in 1949, 1950 and 1951. It recognized some articles of the previous March Constitution of Poland (1921) and PKWN Manifesto (1944), whereas the Constitution of 1935 was declared null and void as fascist. It was replaced in 1952 by the Constitution of the People's Republic of Poland.
References
Small Constitution of 1947 Wikipedia(Text) CC BY-SA