TY  - BOOK
AU  - Heddens,James W.
AU  - Speer,William R.
TI  - Today's mathematics: concepts and methods in elementary school mathematics
SN  - 0023529334 (pbk.)
AV  - QA135.6 .K73 1992
U1  - 372.7 23
PY  - 1992///
CY  - New York, Toronto, New York
PB  - Macmillan, Maxwell Macmillan Canada, Maxwell Macmillan International
KW  - Mathematics
KW  - Study and teaching (Elementary)
N1  - Includes bibliographical references and index
ER  -