Vidad, Dinah C. <br/><br/>
Worktext in elementary number theory : 
Dinah C. Vidad 
 - Mandaluyong City :  Books Atbp. Publishing Corp. ,  c2024. 
 - vi, 114 :   illustration  25 cm. 
<br/><br/>includes reference 
<br/><br/>Chapter 1 : The integers -- Chapter 2 : The greatest common divisor (gcd) and prime factorization -- Chapter 3 : Congruence -- Chapter 4 : Primitive roots -- Chapter 5 : Quadratic residues and reciprocity  
<br/><br/><label>ISBN: </label>9786214092796 
<br/><br/><label>LC Class. No.: </label>QA 241 V53 2024