TY  - BOOK
AU  - Marks,John L.
AU  - Purdy,C.Richard
AU  - Kinney,Lucien B.
TI  - Teaching elementary school mathematics for understanding
AV  - QA135.5 .M36
U1  - 372.7 
PY  - 1965///]
CY  - New York
PB  - McGraw-Hill
KW  - Mathematics
KW  - Study and teaching (Elementary)
N1  - "Curriculum and methods in education."; Includes bibliographies
ER  -