Books by Tetsuya Nagasawa
Jitsumu ni kiku kōsei torihiki
Jitsumu ni kiku kōsei torihiki shinketsu hanrei seisen
Jitsumu kaisetsu shōhizei tenk
Jitsumu kaisetsu shōhizei tenka tokubetsu sochihō
Yūetsuteki chii ran'yō kisei t
Yūetsuteki chii ran'yō kisei to shitaukehō no kaisetsu to bunseki
Heisei 21-nen kaisei Dokkinhō
Heisei 21-nen kaisei Dokkinhō no kaisetsu to bunseki