TECHNICAL HEADQUARTERS specializing in: Information, Books, Codes, Specifications, Standards, Industry Directories, Petroleum Maps, Selected software, references, handbooks and more.\r\nPurchasing Agents: One Purchase Order can supply All your technical publications:\r\nQuotes and special orders are welcome, partial or complete shipments available. Most publications are IN STOCK for IMMEDIATE WORLDWIDE SHIPPING.What is not in stock can easily be ordered if in print.