TY  - BOOK
AU  - Asimov,Isaac
TI  - Earth: our crowded spaceship / 
SN  - 0449231720
AV  - GF48 .A84 1974
U1  - 301.31 
PY  - 1974///
CY  - New York : 
PB  - Fawcett Crest Books, 
KW  - Població
KW  - Literatura juvenil
KW  - lemac
KW  - LITERATURA
KW  - LITERATURE
N1  - Inclou bibliografia i índex.
N2  - Discusses the problems faced by the Earth's inhabitants as population increases and energy sources, food, and land become more scarce.
ER  -