TY - BOOK AU - Watts,Duncan J. TI - Six degrees: the science of a connected age SN - 0393041425 AV - QA 166 W349s 2003 U1 - 511/.5 21 PY - 2003/// CY - New York PB - Norton KW - Graph theory KW - Network analysis (Planning) KW - Social networks KW - Mathematical models N1 - Includes bibliographical references (p. [341]-356) and index ER -