TY  - BOOK
AU  - Engel Arthur
TI  - Problem-Solving Strategies
SN  - 9781493970759
U1  - 510.76 
PY  - 2019///
CY  - Senckenberganlage
PB  - Springer
KW  - The Invariance Principle
KW  - Box Principle
KW  - Number Theory
ER  -