Mines and mining
Subtitle: Maryland coal.
Contributors: Jones, John H.; United States. Bureau of the Census.
Series: Census (11th, 1890) Bull. No. 26
Publisher: [s.n.]
Published: 1891
Place of publication: Washington, D.C
Format: Microform
Subjects: Coal mines and mining -- Maryland -- Statistics.; Maryland -- Census, 1890.
Genres: Statistics.; Census, 1890.