Zierer Ernesto Theory of graphs in linguistics Zierer Ernesto - Paris Mouton 1970 - 62p. cm. - Janua linguarum studia memoriae Nicolai van Wiik Dedicata ed by Ch Van Schoonevald; 94 . Standard No.: 48,168 Source: Textual Subjects--Topical Terms: LINGUISTICS Dewey Class. No.: P0bB44, L0