TY  - BOOK
ED  - National Geographic Society (U.S.)
TI  - Hidden worlds
SN  - 0870443364 :
AV  - QP475.7 .H52
U1  - 500 19
PY  - 1981///
CY  - Washington, D.C.
PB  - National Geographic Society
KW  - Vision
KW  - Juvenile literature
KW  - Microscopy
KW  - Telescopes
KW  - Radiography
KW  - Microscopes
N1  - Includes index; Pocket contains a pamphlet, Far-out fun! (24 p.), a pair of 3-D glasses and a poster; Bibliography: p. 103; Think small / by Edith Kay Pendleton -- Beyond earth / by Kathryn Allen Goldner and Carole Garbuny Vogel -- The inside story / by Catherine O'Neill -- Wider horizons / by Eleanor Felder -- More light on the subject / by Kathryn Allen Goldner and Carole Garbuny Vogel -- Catch all the action / by Catherine O'Neill -- Who discovers hidden worlds? / by Glenn O. Blough
UR  - http://www.archive.org/details/hiddenworlds00nati
UR  - http://www.openlibrary.org/books/OL4402018M
ER  -