Thommen, George S. <br/><br/>
Is this your day? how biorhythm helps you determine your life cycles / 
by George S. Thommen 
 - Rev. ed. 
 - New York, N.Y. :  Crown,  c1973 
 - 160 p. :  ill. 
<br/><br/>Bibliography 
<br/><br/><label>ISBN: </label>0517505991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BIOLOGICAL RHYTHMS
<br/><br/><label>LC Class. No.: </label>QP84.6  / T465I 1973