Copyable

Ribbons are of various kinds, qualities, and colors. Those mostly used are the black, purple, red, and green copyable, the black record or carbon, and, to some extent, the purple hektograph. The copyable ribbons are mainly used for letter and other writing […]

Customers may receive copies of a journal article, technical report, or paper from a conference proceeding upon request. Photocopying conforms to the U.S. Copyright law. If the document is not copyable, the original will be loaned to the customer.