Kery, George L. <br/><br/>
Practical Coal mining:  a mannulfor managers under managers colliery engineers and others / 
George L. Kery 
 - London :  Charles Griffin ,  1900 
 - x, 462 p.:  ill. ;  20 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining