TY  - BOOK
AU  - Robert E. Boyer
AU  -  John L. Higgins, 
TI  - Activities and demonstrations for earth science
U1  - 550 
PY  - 1970///
CY  - New York
PB  - Parker Publishing Co Inc
N1  - Robert E. Boyer & John L. Higgins: Activities and demonstrations for earth science.  New York.  Parker Publishing Co Inc, 1970.--(550BOY)
ER  -