Macfarlane, Mary. <br/><br/>
Assessment of methods for measuring available nutrients in Papua New Guinea soils II :  microelements, manganese, iron, copper and zinc / 
Mary Macfarlane and Simon George. 
 - Port Moresby :  Dept. of Agriculture and Livestock,  1990. 
 - 22 p. 
 - Technical report (Papua New Guinea.  90/5 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>998082042X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Composition.--Papua New Guinea<br/>Soils--Composition.<br/>Soil mineralogy--Papua New Guinea.<br/>Soil chemistry--Papua New Guinea.<br/>Soils--Trace element content.