MacDONALD-ROSS M. /współaut./ 525,367 PASK GORDON Conversation cognition and learning. A cybernetic theory and methodology. With appendices by B.C.E.Scott and D.Kalli kourdis,glossary by M.LIacdonald-Ross and index by B. C.E.Scott. Amsterdam 1975 Elsevier 8° s. XI, nib. 1, 570, ilustr.