“Volume header” in Japanese
Short answer
Volume header in Japanese is “ボリュームラベル” (boryuumuraberu). Full meaning: beginning-of-volume label, volume (header) label, volume header.
Other ways to say “Volume header” in Japanese
ボリューム始めラベル
boryuumuhajimeraberu beginning-of-volume label, volume (header) label, volume header
ボリューム見出しラベル
boryuumumidashiraberu beginning-of-volume label, volume (header) label, volume header
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