PROFICIENCY TESTING FOR SOIL AND PLANT ANALYSIS IN AUSTRALASIA

2002 ◽  
Vol 33 (15-18) ◽  
pp. 2441-2455 ◽  
Author(s):  
George E. Rayment ◽  
Ken I. Peverill
1999 ◽  
Vol 30 (5-6) ◽  
pp. 885-894 ◽  
Author(s):  
John Ryan ◽  
Sonia Garabet ◽  
Abdul Rashid ◽  
Mohamed El Gharous

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