Colour coding keyed to the letters of the alphabet, visible from the front of a book, enabling the user of the book/directory to locate certain desired sections of the book without leafing through the pages.
Colour coding keyed to the letters of the alphabet, visible from the front of a book, enabling the user of the book/directory to locate certain desired sections of the book without leafing through the pages.
Colour coding keyed to the letters of the alphabet, visible from the f...
