TY  - BOOK
AU  - Singer,Berthold
TI  - Trade mark laws of the world, and unfair trade
PY  - 1913///
CY  - Chicago
PB  - [Hammond press, W. B. Conkey company]
KW  - Trademarks
KW  - Local
KW  - Competition, Unfair
KW  - Marcas de fabricas
KW  - Competencia económicas desleal
ER  -