%0 Book Section %B Exchange systems in prehistory %D 1977 %T Mass-Distance Meaures for the Maya Obsidian Trade %A Sidrys, Raymond V. %E Earle, Timothy K. %E Ericson, Jonathon E. %C New York %I Academic Press %K Commerce %K Prehistoric %L Gn799.c45 e95380.1/09/01 %P 91-107 %S Studies in archeology %Z 76013933 //r91edited by Timothy K. Earle, Jonathon E. Ericson.Includes bibliographies and index. %@ 0122276507