Patent laws and trade marks of leading countries of the world;
prepared in the Compiling department of the Bureau of Information of the Philadelphia Commercial Museum.
APA Citation
Commercial Museum (Philadelphia, P. (1899). Patent laws and trade marks of leading countries of the world. [Philadelphia]: The Philadelphia Commercial Museum.
MLA Citation
Commercial Museum (Philadelphia, Pa.). Patent Laws And Trade Marks of Leading Countries of the World. [Philadelphia]: The Philadelphia Commercial Museum, 1899.
Warning: These citations may not always be complete (especially for serials).