Ryan, Mary <br/><br/>
Information retrieval in agricultural engineering 
Mary Ryan, John O'Shea 
 - Toowoomba, Qld.  Darling Downs Institute Press  1979 
 - 50 p.  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultural engineering--Information services--Australia
<br/><br/><label>Dewey Class. No.: </label>025  / .066313  / 0994