NSK training scheme series
Nihon Shinbun Kyokai
Nihon Shinbun Kyokai 1968 NSK training scheme series No. 1-2, 1968
Available at 2 libraries
Nihon Shinbun Kyokai 1967 NSK training scheme series No. 4
Nihon Shinbun Kyokai 1967 NSK training scheme series No.3, 1967