Tetsuya Nagasawa

1970

• Heisei 21-nen kaisei Dokkinhō no kaisetsu to bunseki
• Jitsumu kaisetsu shōhizei tenka tokubetsu sochihō
• Jitsumu ni kiku kōsei torihiki shinketsu hanrei seisen
• Yūetsuteki chii ran'yō kisei to shitaukehō no kaisetsu to bunseki