2 + 2 = 3, etc

Payment in full by Visa/MC, cash, check, money order, or Amex/Discover (processed by Biblio) with order. Books can be held up to 10 days upon request; email is the preferred (and quickest) means of communication. Postage is extra: orders through Biblio are charged at their prevailing rates; otherwise, postage cost will be quoted upon request (optional insurance is extra at cost). All items are graded conservatively using consistent standards: generally speaking, 'Fine' is the best condition class, followed by 'Very Good', 'Good', 'Fair', and 'Poor' (these can be considered as analogous to letter grades A, B, C, D, F: the latter two classes are rarely offered). Please inquire if you have any questions about the condition of an item listed. Any purchase may be returned for refund if deemed unsatisfactory upon receipt. I will be glad to ship with invoice to academic institutions in advance of payment if a purchase order is provided. Dealers may inquire for reciprocal trade discount. California shipments subject to an additional 9.25% sales tax.