I thought I would pass this link on:  A good list of Btu values of various types of wood per cord. 
http://www.engineeringtoolbox.com/wood-combustion-heat-d_372.html
	
		
			
		
		
	
				
			http://www.engineeringtoolbox.com/wood-combustion-heat-d_372.html
 
	 
	 
 
		 
 
		 
 
		