Nouka hibai ron

Nouka hibai ron

Nouka hibai ron

Hibairon

Sakumotsu saibai ron

Jitsuyou saibai ron

Sakumotsu saibai ron

Asuparagasubatake no hibai kanri no gourika ni kansuru kenkyuu

Hiryou seizou ron

Tsuuzoku hiryou ron

Tsuuzoku hiryou ron

Tsuuzoku hiryou ron

Yakuyou shokubutsu saibaihou : nouka fukugyou

Nouka hikkei hiryou seibun ichiran

Nougyou bakuteriya ron

Tsuuzoku hiryou dojou ron

Kansho zukuri ron oyobi saibaihou

Nougyou houtoku ron

Nougyou souko ron

Nougyou kaihatsu ron

Denmāku nougyou ron

Nouson jikyuu ron

Nihon nougyou ron

Nouson saiken ron

Rakunou keiei ron