Orders must be paid by check or money order in U.S. funds drawn on a U.S. bank or by Mastercard, Visa, or American Express credit cards. All indexes are available on microfilm and microfiche.
Microfiche prices are the same as for hard copy.
Prices for microfilm will be supplied upon request. Classified by subject and indexed by author. Classified by subject and indexed by author and inventor. Classified by subject and indexed by author and inventor. Classified by subject and indexed by author and inventor.