Amazing mysteries of the world
O'Neill, Catherine,1950-
[Washington, D.C.] National Geographic Society
c1983
Accompanied by "Classroom activities" in portfolio (8 leaves : ill.), 2 games "Far-out-fun" and "Exploring the unknown" (2 fold. sheets)
Discusses such mystifying phenomena as the auroras, black holes, and Bigfoot
Includes index
Bibliography: p. [103]
Curiosities and wonders