{{? it.is_show_classnumber}}
{{~it.books_classnumber :book_classnumber:index}}
{{? book_classnumber.active }}
{{??}}
{{?}}
{{~}}
{{?}}
{{? it.is_show_subject}}
{{~it.books_subject :book_subject:index}}
{{? book_subject.active }}
{{??}}
{{?}}
{{~}}
{{?}}
