Changing Patterns in Fertilizer Use

1968 ◽  
Vol 51 (4) ◽  
pp. 952-953
Author(s):  
W H Garman

Geoderma ◽  
1969 ◽  
Vol 2 (2) ◽  
pp. 171
Author(s):  
J. Van Garderen

2005 ◽  
Vol 173 (4S) ◽  
pp. 57-58
Author(s):  
David F. Penson ◽  
June Chan ◽  
Susan Polich ◽  
Christopher S. Saigal ◽  
Mark S. Litwin

1971 ◽  
Vol 16 (3) ◽  
pp. 166, 170-172
Author(s):  
PETER LENROW

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