Gumenskii, Boris Mikhailivich, <br/><br/>
Soil drilling by vibration / 
By b. m. gumenskii and n. s. komarov. authorized translated from the russian. 
 - 80 páginas :  ilustraciones 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tixotropía<br/>Vibradores<br/>Perforación a corona
<br/><br/><label>LC Class. No.: </label>TN279  / G813