TY  - BOOK
AU  - Robert Snedden 
TI  - Problem Solved: the great breakthroughs in mathematics 
SN  - 978-1-78828-081-5
U1  - Cir. 510.9 Sn67 C2018 
PY  - 2018///
CY  - London: 
PB  - Arcturus Publishing Limited; 
ER  -