Occurrence of pear canker in Ina-district, Nagano Prefecture
長野県伊那地方の二十世紀ナシ胴枯病発生の実態

S. IMAMURA, Y. SAITO
1970 Proceedings of the Kanto-Tosan Plant Protection Society  
doi:10.11337/ktpps1954.1970.61 fatcat:6f6l6or6mvavlao2wg3y3afupe