HOW TO ORDER Prices given are for orders from within the United States and Canada which are shipped fourth class (book rate). For UPS or first class mail delivery, call 703/435-3248. Overseas Customers: add $3.00 per title for surface mail, or $5.00 per title for air mail. Commonwealth of Virginia Residents: add 4.5% sales tax. Payment must accompany all orders. VITA accepts personal checks, bank drafts, international money orders, postal money orders, and UNESCO coupons payable in U.S. dollars only. No COD orders accepted. Please do not send cash through the mail. Make sure that full shipping information -- name and address, including postal code and country -- is provided. Prices are subject to change without notice. For publications orders and inquiries: VITA Publications Services P.O. Box 12438 Arlington, Virginia 22209 USA phone: 703/435-3248 For general information and technical service: VITA Headquarters 1600 Wilson Boulevard, #500 Arlington, Virginia 22209 USA phone: 703/276-1800 internet: bmathur@vita.org .