Macfarlane, Mary. <br/><br/>
Assessment of methods for measuring available nitrogen, potassium, calcium, manganesium, zinc, copper, manganese and iron in soils or [sic] Papua [sic] New Guinea / 
Mary Macfarlane and Simon George. 
 - [Port Moresby] :  Dept. of Agriculture and Livestock,  1987. 
 - 98 p. 
 - Technical report (Papua New Guinea.  87/11 .
<br/><br/><label>ISBN: </label>9980660708 
<br/><br/><label>LCCN: </label>92033111     
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soils--Composition.--Papua New Guinea<br/>Soils--Trace element content.<br/>Soil chemistry--Papua New Guinea.<br/>Soil mineralogy--Papua New Guinea.<br/>Soils--Composition.