Lethbridge, T. C. <br/><br/>
A step in the dark / 
T. C. Lethbridge 
 - London :  Routledge & Kegan Paul,  c1967 
 - xi, 161 p. :  ill. maps ;  22 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label> PND 1.75 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Extrasensory perception
<br/><br/><label>Dewey Class. No.: </label>133.81