一版 is read as いっぱん (ippan) and means an edition.
いっぱん
ippan
いちぐう
corner
いっそう
lowest floor (of a building)
general
いったい
whole area
いっしゅう
one round
いっかい
one rank
いっこじん
private person
いっかん
first volume
ひとしずく
one drop (of fluid)
いっぴつ
one stroke (of a brush)
mere
いちばい
(even) more