TY  - BOOK
AU  - Marzell, Ernar S. 
AU  - Holle, Erich 
TI  - Great Inventions
SN  - 0822507056
AV  - T48.M3913 
U1  - 608.7 
PY  - 1973/// .
CY  - Minneapolis, Minesota : 
PB  - Lerner Publication Company
N2  - Describes some of the most important inventions in the history of civilization and the men primarily responsible for them
ER  -