You are looking on one 5 1/2" by 8 1/2" 26 Page softcover copy of "A MISSOURI NATURAL AREAS SYSTEM" by the Missouri natural areas committee,printed in1978.This item is in good condition. All pages are clean and tight.Chapters include:policy of a natural areas system, a classification of terrestrial natural communities in Missouri,a classification of aquatic natural communities in Missouri,and much, much more. Thanks for Looking.A4***Powered by eCRATER