【實用書籍app】CFR-40 (2013)|最夯免費app-綠色工廠好玩App

Code of Federal Regulations Title 40 (2013 Edition)App features:- Easy-to-use navigation system to group the book by expandable and collapsable hierarchy side menu.- Full-text-search with highlighted keywords in search result.- Quick select text or paragraph with context shortcuts to highlight / copy / send email- Feedback to improve the app by email.