Winter, O. B <br/><br/>
Durability of concrete drain tile  / 
O. B. Winter, H. H. Musselman 
 - East Lansing, Michigan  :   Agricultural College Experiment Station 
 - 13 p. 
 - Michigan. Agr. Exp. Sta. Special Bull; 75 .
<br/><br/><label>LCCN: </label>203116 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tubos de concreto