Fort Atkinson, Wis.â€”Cygnus Business Media's Supply & Demand Chain Executive
(60,000 circ.) has added an online buyer's guide for supply chain management professionals. The Supply & Demand Chain Executive Buyer's Guide (http://directory.sdcexec.com/buyersguide) includes a comprehensive database of products, services and vendors. It is the first in what Cygnus said will be a series of online buyer's guides for all of its trade publications.