The Orthography Commission , headed by Yakub Kolas , set up the project in about 1951 .
It was approved only in 1957 , and the normative rules were published in 1959 .
The Orthography Commission , headed by Yakub Kolas , set up the project in about 1951 , but it was approved only in 1957 , and the normative rules were published in 1959 .