San Francisco : Boyd & Fraser publishing company, 1979 . xii, 290 p. : 24cm.. 0878350748
]]>By Braun, Ernest. London : Earthscan, 1995 . 218 p ; 22 cm. 185383243X
]]>By George, F. H.. Elmsford, N.Y. : Pergamon Press, 1977 . xiv, 193 p. ; , Includes indexes. 25 cm.. 0080212298 | 008021228X (pbk.)
]]>By Webster, Andrew,. New Brunswick, N.J. : Rutgers University Press, 1991 . viii, 181 p. : 23 cm.. 0813517222 : | 0813517230 (pbk.) :
]]>