27320 - Books, Printing only or Printing & Binding (Miscellaneous)
27323 - Textbooks, Printing & Binding
2732310 - - Elementary & High school textbooks: Hardbound + Teachers' Editions
2732312 - - Elementary & High school textbooks: Paperbound + Teachers' Editions
2732314 - - College: Hardbound
2732316 - - College: Paperbound
2732318 - - College: Workbooks & Standardized tests
2732399 - - Textbooks, Printing & Binding (Miscellaneous)
27324 - Technical, Scientific & Professional books, Printing & Binding
2732422 - - Technical, Scientific & Professional books: Hardbound
2732425 - - Technical, Scientific & Professional books: Paperbound
2732499 - - Technical, Scientific & Professional books, Printing & Binding (Miscellaneous)
27325 - Religious books, Printing & Binding
2732532 - - Religious books: Hardbound + Flexible covers
2732535 - - Religious books: Paperbound
2732599 - - Religious books, Printing & Binding (Miscellaneous)
27326 - General books (Trade, etc.) Printing & Binding
2732642 - - General books: Book club & Mail order: Hardbound
2732643 - - General books: Book club & Mail order: Paperbound
2732644 - - Mass market paperbound books, Rack size, Distributed predominantly to mass market outlets
2732645 - - Adult trade books: Hardbound
2732646 - - Adult trade books: Paperbound
2732647 - - Juvenile books: Hardbound
2732648 - - Juvenile books: Paperbound
2732699 - - General books (Trade, etc.) Printing & Binding (Miscellaneous)
2732A - Books (General) Printing & Binding
2732A52 - - Encyclopedias
2732A54 - - Reference books (General): Hardbound
2732A55 - - Reference books (General): Paperbound
2732A56 - - Books (General): Hardbound
2732A57 - - Books (General): Paperbound
2732A99 - - Books (General) Printing & Binding (Miscellaneous)
2732B - Books, Printing only, not Bound
2732C - Pamphlets, Printing only or Printing & Binding
2732XX0 - - Books, Printing only or Printing & Binding (Miscellaneous - Volume)
2732XX2 - - Books, Printing only or Printing & Binding (Miscellaneous - Speciality)