Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WATANABE Naoshi,"The Density Effect on the Appearance Two of Wing-Forms in the Brown Planthopper, Nilaparvata lugens and Smaller Brown Planthopper, Laodelphax striatellus",Japanese Journal of Applied Entomology and Zoology,00214914,JAPANESE SOCIETY OF APPLIED ENTOMOLOGY AND ZOOLOGY,1967,11,2,57-61,https://cir.nii.ac.jp/crid/1390282681426899968,https://doi.org/10.1303/jjaez.11.57