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- [3] CHARACTERIZATION OF FULVIC-ACIDS FROM ACID SOILS FROM CATALONIA AGROCHIMICA, 1989, 33 (1-2): : 31 - 40
- [4] Characterization of humic and fulvic acids extracted from two major soils of Punjab ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1999, 217 : U829 - U829
- [6] Characterization of humic and fulvic acids extracted from two major soils of Punjab. ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1999, 217 : U55 - U55