essays in the thought of Michael Polanyi Langford, Thomas A. Poteat, William H. text xx Durham, N. C. :  Duke University Press 1968 9999 monographic und eng viii, 464 p. ; 22 cm. edited, with an introduction by Thomas A. Langford and William H. Poteat Knowledge, Theory of Polanyi, Michael, 1891-1976 B945.P584 .L3 1968 201221