BLUEBERRY BANANA PIE 4 cups fresh blueberries    1 teaspoon lemon juice 1 cup sugar                        2 ripe bananas 3 Tablespoons flour            9-inch graham cracker                                             pie chell Mix sugar, flour, lemon juice and 1 cup  berries.  Cook over medium heat until thick.  Cool:  Add three cups uncooked berries:  Line bottom of crust with sliced bananas:  Add blueberry mixture:  Serve with whipped topping: