Howcroft, N. H. S. <br/><br/>
Tree improvement and seed procurement activities in Papua New Guinea  progress report 1974-1978 
N. H. S. Howcroft. 
 - [s.l.  s.n.]  1979. 
 - 12 leaves. 
<br/><br/> Prepared for the SEATI and SPCP Regional Conference, Chiengmai, Thailand, 1979. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tree seeds.<br/>Tree breeding--Papua New Guinea.