Rowlands, Dorothy Howard . <br/><br/>
Coal: Yeasterday, Today and Tomorrow /  Textual Documents 
Dorothy Howard Rowlands. 
 - 1st ed. / 
 - London :  George G Harrap & Co Ltd ,  1949. 
 - 167p. :  ill ;  22cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>Coal G-Technology 
<br/><br/><label>Dewey Class. No.: </label>622.33  / R 797 C