Winter, O. B <br/><br/>
The durability of concrete drain tile II  / 
O. B. Winter 
 - East Lansing, Michigan  :   Agricultural College 
 - 12 p. 
 - Michigan. Agr. Coll. Special Bull; 82 .
<br/><br/><label>LCCN: </label>203117 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tubos de concreto