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} |
128 | DF | .~ Preparing nitrogen-containing organic compound {1} |
129 | .~.~ Amide (e.g., chloramphenicol, etc.) |