found: Imperfect markets in agricultural trade, 1981 (a.e.)t.p. (Alex F. McCalla) CIP data sheet (b. Apr. 21, 1937)
found: Imperfect competition and political economy, 1990:CIP t.p. (Alex McCalla)
found: Young, L. The political economy of agricultural trade, 1991:t.p. (Alex McCalla) p. iii (prof. of agricultural economics, Univ. of Calif., Davis)
found: Digital dissertations, Oct. 19, 2009(McCalla, Alexander Frederick, Ph. D., University of Minnesota, 1966--An analysis of the possibilities for international arrangements for temperate zone grain livestock trade)