TY  - BOOK
AU  - Curtis, Neil,
AU  - Greenland, Peter,
TI  - How steel is made
T2  - I wonder
SN  - 0822523787
AV  - TN732 C87
PY  - 1992///
CY  - Minneapolis, minnesota
PB  - Lerner publications
KW  - Acero
KW  - Literatura juvenil
N1  - Originalmente publicado en: oxford, england : heinemann educational books, 1990
ER  -