Experiment station record/  Experiment station record  
United States Departament Agriculture, Bureau of chenistry and soils., 
 - WASHINGTON:  Government printing office,  1912- 
 - 110p. 
<br/><br/> Запись экспериментальной станции 
<br/><br/><label>Subjects--Index Terms: </label>агротехника зология 
<br/><br/><label>Universal Decimal Class. No.: </label>63