Leffingwell, Albert <br/><br/>
Illegitimacy and the influence of seasons upon conduct / 
by Albert Leffingwell 
 - New York :  Arno Press,  1976 
 - 160 p. :  ill. ;  21 cm. 
 - Demography .
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>0405079877 
<br/><br/><label>Subjects--Personal Names: </label><br/>Illegitimacy--United Kingdom.
<br/><br/><label>Subjects--Topical Terms: </label><br/>Crime and criminals--United Kingdom.