TY  - BOOK
AU  - Chen,Y.
AU  - Senesi,N.
AU  - Schnitzer,M.
TI  - Information Provided on Humic Substances by E4/E6 Ratios
UR  - https://drive.google.com/file/d/1wgJTZaTvdr4qj35rwAMcQb70YDa7ywJH/view?usp=drivesdk
ER  -