The Information Retrieval Problem as Applied to Agricultural Chemicals.

1964 ◽  
Vol 4 (3) ◽  
pp. 166-166
Author(s):  
R. J. Magee
1993 ◽  
Vol 4 (3) ◽  
pp. 238-242
Author(s):  
A. N. Terekhin ◽  
S. Yu. Meshechkova

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