The normal distribution;  The school mathematics project/ 
Chris Belsom, Robert Black et al........ 
 - Great Britain.;  Cambridge University Press.;  1993. 
 - 96p.,  ill,  24cm 
<br/><br/><label>ISBN: </label>9780521408905 0521408903 
<br/><br/><label>LC Class. No.: </label>QA107  / N78 1993