Soil test interpretation :  proceedings of a sympossium held at Dubbo in February 1990 / 
compiled by C. L. Mullen , A. M. Kay and R. D. Pugh. 
 - Dubbo, N. S. W. :  NSW Agriculture & Fisheries,  1990. 
 - 76 p. :  ill. , tabs. ;  30cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Testing.