•    
  • Per Page:
  • Sort By:

Search results for ' ' (0.004 seconds ) Total Hits : 5

1

Studies on microbial oxidation of nitrogen compounds

2

Studies in nitrogen transformation

Language:English
3

Studies on urea-aldehyde condensation products as slow acting nitrogenous fertilizers

4

Studies of fertilizer nitrogen in multiple cropping systems as traced with 15 N

Language:English
5

Transformation of carbon and nitrogen compounds