The Reference Materials Manual is part of a set of 21 manuals (AA 001 009-001 029) used in APEX (Air Pollution Exercise), a computerized college and professional level "real world" game simulation of a community with urban and rural problems, industrial activities, and air pollution difficulties. For the purposes of the gaming exercise, APEX County, including the urban area of Central City and the surrounding rural districts, is divided into 29 analysis areas. Information and data for each of these analysis areas are presented in this manual. Population, employment and land use are allocated to the areas and are categorized by types established especially for APEX. These types are described in the glossary included in this manual (and in other manuals, except volume 21). The glossary is designed to aid participants in learning the terminology of urban and environmental management as well as that of the gaming exercise. The gamed environment is similar to that found in a typical midwestern industrialized town (the prototype city is Lansing, Michigan), The game simulation procedure and required computer facilities are further described in resumes for AA 001 009 and 001 010. (Author/PR)