10 March 10 May 10 July 10 September 10 Space orders are due on or before the closing date listed above and may not be cancelled by the advertiser after that time.
Covers are non-cancellable.
Additional charges for back-up, folding or unfolding, and binding will be furnished on request. Such charges are non-commissionable. For rates on multiple page inserts, contact American Scientist. Inserts are non-cancellable. Commissions and Discounts 15 percent of gross billing allowed to recognized advertising agencies on space, color, and position charges only, provided account is paid within 30 days of invoice date.