The climatological investigation of soil temperature / 
Milton L. Blanc. 
 - [Geneva : Secretariat of the World Meteorological Organization],  1957. 
 - WMO ;  Technical note no. 20 WMO ;  no. 72 WMO ;  TP. 28 WMO ;  Technical note no. 21 .
 - World Meteorological Organization ;  Technical note n World Meteorological Organization ;  n World Meteorological Organization ;  T World Meteorological Organization ;  Technical note n .
 - WMO (Series) ;  no .
<br/><br/> Table of Contents.  Summaries in French, Russian, Spanish.  Two technical notes bound as one. 
<br/><br/>Bibliography p. 16-18 (TN 20). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Meteorology, Agricultural.<br/>Soil temperature.<br/>Humidity.