TY  - GEN
TI  -   Our planet Earth: Question and Answer
SN  - 0600580245
U1  - 551,DUR 
PY  - 1993///
CY  - Madrid
PB  - Heinemann
KW  -   Our planet Earth
N1  - The Earth as A Planet (Page-4), Changing Earth (Page-14), Wither , Land And Resources (Page-22), Life On Earth (Page-36).
ER  -