TY  - BOOK
AU  - Stuart,Gene S
AU  - Harris,James WSilson
TI  - Towns down underground
T2  - Books For Young Explorers
SN  - 0870448463
U1  - 7-10 years 
PY  - 1991///
CY  - National Geographic Society
PB  - U.S.A
KW  - Science (Animals )
N1  - Science (Animals ); Includes bibliographical references
ER  -