TY  - BOOK
AU  - Willerding,Margaret F.
ED  - Lyons & Carnahan
TI  - Mathematics around the clock
U1  - R 510.23 
PY  - 1970///
CY  - Newport Beach, Calif.
PB  - Franklin Publicationsdistributed by Lyons & Carnahan
KW  - Modular arithmetic
KW  - Arithmetic
KW  - Study and teaching (Elementary)
KW  - Mathematics
N1  - Includes bibliographies and index
ER  -