Add three drops of yellow food coloring to one of the new tubes. 6. Add three drops of blue food coloring to the other tube. 7. Place lids tightly on both tubes and ...
Otto Apel, Dietrich B hler & Karlheinz Rebel. 3 Bde. Weinheim und .... Robert. Trapp and Janice Schuetz. Prospect Heights, IL: Waveland Press, 9-. 26. W rner ...