TY  - BOOK
AU  - Houston, James D.
TI  - Continental Drift
SN  - 0070304882
PY  - 1978///
CY  - New York
PB  - Mcgraw-hill book company 
N2  - The theory that Earth's continents were once joined as a single supercontinent named Pangaea before breaking apart 200–250 million years ago and moving to their present positions
ER  -