Colwell, J. D. <br/><br/>
Computations for studies of soil fertility and fertilizer requirements 
by J.D. Colwell 
 - Slough  Commonwealth Agricultural Bureaux  1978 
 - ix, 297 p.  ill.  30cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers--Data processing<br/>Soil fertility--Data processing<br/>FORTRAN (Computer program language)
<br/><br/><label>Dewey Class. No.: </label>631.8  / 1