A mancial of underground surveying /
Trumbull, Loyal Wingate,
A mancial of underground surveying / By loyal wingate trumbull - 251 páginas - Mining library ; v. 7 .
Topografía de minas
TN273 / T78
A mancial of underground surveying / By loyal wingate trumbull - 251 páginas - Mining library ; v. 7 .
Topografía de minas
TN273 / T78