TY  - BOOK
AU  - Barufaldi, James P.
AU  - Ladd, George T.
AU  - Moses, Alice Johnson.
TI  - Heath science
SN  - 0669021512
PY  - 1981///
CY  - Lexington, mass.
PB  - Heath
KW  - Science
KW  - Study and teaching (Elementary)
KW  - Problems, exercises, etc
N1  - Includes index
ER  -