In a large bowl, combine the whole wheat flour, all-purpose flour, yeast, and salt.
In another bowl, mix the seeds with the oats.
In a saucepan, combine the water and molasses and warm the mixture over low heat until a thermometer reads 120 to 130 degrees F (50 to 55 degrees C) .
Add the liquid to the flour mixture with the egg white. Mix together until a soft dough forms. Turn the dough onto a lightly floured surface. Knead for 10 minutes; then shape into a ball. Lightly oil a large stainless steel bowl. Add the dough and turn to cover the dough with the oil. Cover the bowl with a tea towel and let rise in a warm place for 2 hours until doubled in size.
When the dough has risen, punch the dough down with your fists and add all but 2 tablespoons of the seed mixture working it into the dough. Shape the dough into a baton. Place on a silicone covered baking sheet and cover the baton with a tea towel and let rise for 1 hour until doubled in bulk.
Preheat the oven to 180C (350F). Brush the top of the bread with the egg wash and sprinkle on the reserved seed mixture. Bake the bread for 30 minutes or until the loaf sounds hollow when tapped on the bottom. Remove the bread from the pan and cool on a baking rack.