MacDougal, Daniel Trembly,  1865-1958. <br/><br/>
Reversible variations in volume, pressure, and movements of sap in t rees / 
by D. T. MacDougal. 
 - Washington :  Carnegie Institution of Washington,  1925. 
 - iii, 90 p. :  ill., 5 pl. on 3 l., diagrs. ;  26 cm. 
 - Carnegie Institution of Washington publication ;  no. 365 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sap.<br/>Trees.
<br/><br/><label>Dewey Class. No.: </label>581.11 MACD