Dai-ichi-ji-mammō-gakujutsu-chōsa-kenkyū-dan-no-shizen-kagaku-chōsa. Natural science research of the first scientific expedition to Manchoukuo. - Tokunaga, Shigeyasu (Dai-ichi-ji-mammō-gakujutsu-chōsa-kenkyūdan-hōkoku, 1934)