Original: Alexey Ivanovich Rykov ( ; 25 February 1881 - 15 March 1938 ) was a Russian Marxist revolutionary and Soviet politician , Soviet head of the government from between 1924 to 1930 .
Simplified: Alexey Ivanovich Rykov ( 25 February 1881 - 15 March 1938 ) was a Russian revolutionary and Soviet head of the government ( 1924-1930 ) .