Einen seiboku honsakumotsu no yūyō seishokushitsu no chōki hozon to riyō ni kansuru kenkyū
Series: Kenkyū seika -- 125
Publisher: Nōrin Suisanshō Nōrin Suisan Gijutsu Kaigi Jimukyoku
Published: 1980
Place of publication: Tōkyō
Language: jpn
Number of pages: 112