Metcalf, Robert L.; Davis, Elisabeth B.(Graduate School of Library Science. University of Illinois at Urbana-Champaign., 1972)
The environment is just slightly larger than the earth and is comprised of the
planet, with a gross weight of 5.88xl021
tons, a diameter of 7,900 miles, a
surface of 197xl06
square miles, and a 10-mile thin skin, the ...