def METHOD_NAME(self):
    def f(t):
        return LCSH.target_age(t, None)
    assert (5,5) == f("Interest age: from c 5 years")
    assert (9,12) == f("Children's Books / 9-12 Years")
    assert (9,12) == f("Ages 9-12")
    assert (9,12) == f("Age 9-12")
    assert (9,12) == f("Children's Books/Ages 9-12 Fiction")
    assert (4,8) == f("Children's Books / 4-8 Years")
    assert (0,2) == f("For children c 0-2 years")
    assert (12,14) == f("Children: Young Adult (Gr. 7-9)")
    assert (8,10) == f("Grades 3-5 (Common Core History: The Alexandria Plan)")
    assert (9,11) == f("Children: Grades 4-6")
    assert (0,3) == f("Baby-3 Years")
    assert (None,None) == f("Children's Audio - 9-12") # Doesn't specify grade or years
    assert (None,None) == f("Children's 9-12 - Literature - Classics / Contemporary")
    assert (None,None) == f("Third-graders")
    assert (None,None) == f("First graders")
    assert (None,None) == f("Fifth grade (Education)--Curricula")