Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
Hirano Toshiaki,The declining abundance of Great Bittern during the breeding season at Watarase Marsh,Bird Research,1880-1587,Japan Bird Research Association,2018,14,0,A13-A22,https://cir.nii.ac.jp/crid/1390564237990032640,https://doi.org/10.11211/birdresearch.14.a13