書冊 is read as しょさつ (shosatsu) and means book.
しょさつ
shosatsu
しょせき
book
しょしがく
bibliography (study of books)
しょかん
letter
かきかえる
to rewrite
しょこ
archive (file)
しょりん
vast stock of books
しょし
bibliography (history or description of books)
たんざく
thin rectangle
さつ
counter for books
ぶんさつ
separate volume
べっさつ
いっさつ
one copy (of a book, magazine, etc.)