Bibliography Details Questar Corporation. Price catalog, 1972. The following is a complete listing of all citations using this source: § 3.1. Design Changes and RefinementsCitation No. 1§ 4.2. New Accessories and Design RefinementsCitation No. 2Citation No. 3§ 4.3. Marketing and SalesCitation No. 4TimelineCitation No. 5Citation No. 6Citation No. 7