Books by Hiroki Oka
Idō to kyōsei no Tōhoku Ajia
Idō to kyōsei no Tōhoku Ajia
Mongolyn tu̇u̇khiĭn sudalgaany
Mongolyn tu̇u̇khiĭn sudalgaany shinė khandlaga, tulgamdsan asuudal
Tōhoku Ajia
Tōhoku Ajia
Mongoru no kankyō to henʼyōsur
Mongoru no kankyō to henʼyōsuru shakai
Shindai Mongoru monki seido no kenkyū
1911 ony Mongolyn ẏndėsniĭ khu
1911 ony Mongolyn ẏndėsniĭ khuvʹsgalyn urʹdkhilsan nokht͡sol ba olon ulsyn baĭdal
Mongolyn tu̇u̇kh, ugsaatny sud
Mongolyn tu̇u̇kh, ugsaatny sudlalyn zarim asuudald
Mongoru kenkyū ronshū
Mongoru kenkyū ronshū
Facets of transformation of th
Facets of transformation of the Northeast Asian countries