Ibach, D. B.  1900- <br/><br/>
A graphic method of interpreting response to fertilizer / 
by D.B. Ibach. 
 - Washington, D.C. :  U.S. Dept. of Agriculture, Agricultural Research Service,  1956. 
 - ii, 27 p. :  ill. ;  26 cm. 
 - Agriculture handbook / United States Department of Agriculture ;  no. 93 .
 - Agriculture handbook (United States. Department of Agriculture) ;  no. 93. .
<br/><br/> "Supersedes U.S. Bur. Agr. Econ., FM 105, Determining profitable use of fertilizers, 1953 / by D. B. Ibach and S. W. Mendum." 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>LCCN: </label>agr56000137  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers--Graphic methods.
<br/><br/><label>LC Class. No.: </label>S639  / .I2 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84Ah no.93