TY  - BOOK
T1  - Ciencias de la Naturaleza : 7 E.G.B.
A2  - Dobers, J.
LA  - Spanish
PP  - Madrid
PB  - Interduc-Schroedel
YR  - 1979
UL  - https://glotrec.wdi-testing.gei.de/cat/Record/manes96440
OP  - 256
SN  - 8438851975
ER  -