VOLUME
2 0,
NO.
2,
FEBRUARY
1948
29 A
MALLINCKRODT
CHEMICAL
81 YEARS OF SERVICE
I O CHEMICAL
UNIFORM
MALLINCKRODT
STREET,
CHICAGO
-
CINCINNAII
•
USERS
ST. LOUIS
CLfVIIAN!)
.
7, M O . LO ", ANC i l_F 'i
·
72 G O L D ·
MONIRLAL
WORKS
DFI'fNDABLE
Ρ I) R Ι Τ Υ
STREET, NEW YORK ·
PHILADELPHIA
•
8, N . Y .
SAN F RANCI: ι :θ
