Pitala, Joachim Aquinas Richard. <br/><br/>
Effect of liming on soil pH, phosphorus availability and uptake Siratro in some Papua New Guinea soils / 
Joqachim Aquinas Richard Pitala. 
 - Lae :  Papua New Guinea University of Technology,  1990. 
 - 58 p. ;  30 cm. 
<br/><br/>Research report (AGP 70) submitted in partial fulfilment of the requirements for the Postgraduate Diploma in Agriculture. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Liming of soils--Papua New Guinea.<br/>Soils--Papua New Guinea.