@book{ BA85897510,
author = "Kovalʹskiĭ, S. L. (Samuil Lʹvovich) and Madanov, Khamit Madanovich",
title = "Освоение целинных земель в Казахстане : историко-партийный аспект",
publisher = "Изд-во Наук Казахской ССР",
year = "1986",
URL = "https://ci.nii.ac.jp/ncid/BA85897510"
}