Morrill, Richard L. Spatial diffusion / Richard Morrill, Gary L. Gaile, Grant Ian Thrall. - Newbury Park : Sage Publications, c1988. - 86 p. : ill. ; 23 cm. - Scientific geography series ; v. 10 . Bibliography: p. 80-84. ISBN: 0803928521 0803926847 LCCN: 87062683 Subjects--Topical Terms: Human geography.Culture diffusion. LC Class. No.: GF95 / .M67 1988 Dewey Class. No.: 910 / MOS 1988