Aliyah Bet ( Hebrew : ' עלייה ב , `` Aliyah ` B ' '' - bet being the second letter of the Hebrew alphabet ) was the code name given to illegal immigration by Jews to the British Mandate for Palestine in violation of British White Paper of 1939 restrictions , in the years 1934-1948 .
Aliyah Bet ( Hebrew : ' עלייה ב , Aliyah bet ) is the name of the illegal immigration to by Jews to the British Mandate of Palestine between 1934 and 1948 .