30 days, postage and insurance billed at cost. Libraries, museums, and institutions billed; deferred billing on request. Due to delays in surface mail, overseas orders will be sent by Air Book Post, registered, unless we are instructed otherwise. Payments from outside the U.S. should be by check on an American bank; otherwise we must reserve the right to bill the purchaser for charges incurred in collection. Mastercard and Visa accepted.
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