Joachim, Harold H. (Harold Henry), 1868-1938.  Joachim, Harold H. (Harold Henry), 1868-1938. <br/><br/>
Descartes's Rules for the direction of the mind / 
by Harold H. Joachim ; reconstructed from notes taken by his pupils ; edited by Errol E. Harris ; foreword by David Ross. 
 - London :  Allen & Unwin,  [1957] 
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Descartes, Rene, 1596-1650. Regulae ad directionem ingenii. Descartes, Rene, 1596-1650. Regulae ad directionem ingenii.  Descartes, Rene, 1596-1650. Regulae ad directionem ingenii.