| 435 / | HD | CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY |
| 41 | DF | MICRO-ORGANISM, TISSUE CELL CULTURE OR ENZYME USING PROCESS TO SYNTHESIZE A DESIRED CHEMICAL COMPOUND OR COMPOSITION {26} |
| 132 | DF | .~ Preparing oxygen-containing organic compound {6} |
| 155 | DF | .~.~ Containing hydroxy group {2} |
| 157 | DF | .~.~.~ Acyclic {3} |
| 161 | | .~.~.~.~ Ethanol {2} |
| 162 | DF | .~.~.~.~.~> Multiple stages of fermentation; multiple types of micro-organisms or reuse of micro-organisms |
| 163 | DF | .~.~.~.~.~> Produced as by-product, or from waste, or from cellulosic material substrate {2} |