Heidegger, Martin 1889-1976.
Discourse on thinking /
Martin Heidegger ; a translation of "Gelassenheit" by John M. Anderson, E. Hans Freund ; with an introduction by John M. Anderson 
. - New York : Evanston : London : Harper & Row, Publishers,  1966 
. - 93 p.  20 cm. 
 - (Harper Torchbooks  ; TB 1459 )