Blackwood, Paul Everett, 1913- The world and its wonders / [electronic resource] / Paul E. Blackwood, Robert M. Garrels, Margaret McKown Stephens ; Yvonne Beckwith, editor ; Anne Neigoff, managing editor.. — Chicago : : Standard Educational Corp.,, 1978.. — 186 p. : : ill. (some col.) ; 26 cm. — (Child horizons).
Includes index.
Анотація: Includes brief articles in the areas of astronomy, geology, meteorology, energy, commerce, and industry.