TY  - BOOK
AU  - Haylock,Derek
AU  - McDougall,Douglas
TI  - Mathematics every elementary teacher should know
SN  - 1552441055
AV  - QA 135.5 .H418 1999
U1  - 513.102 
PY  - 1999///
CY  - Norwood, MA
PB  - Christopher-Gordon
KW  - Mathematics
KW  - Study and teaching (Elementary)
KW  - Local
N1  - Includes bibliographical references and index
ER  -