A. Tsumori

Delayed response of wild Japanese monkeys by the sand-digging method (II)

A. Tsumori, 1966, Primates.

Delayed response of wild Japanese monkeys by the sand-digging method (I)

M. Kawai, Ryoji Motoyoshi, A. Tsumori, 1965, Primates.

A confirmatory analysis of the newly-acquired behaviors of the Japanese monkeys on Koshima Island

M. Kawai, Ryoji Motoyoshi, A. Tsumori, 1963, Primates.