LINGO LIBRARY · 68690The Vailan or annular theory: A synopsis of Prof. I. N. Vail's argument in support of the claim that this Earth once possessed a Saturn-like system of rings✳Bowers, StephenENB2 · EstimatedThe Vailan or annular theory: A synopsis of Prof. I. N. Vail's argument in support of the claim that this Earth once possessed a Saturn-like system of ringsBowers, Stephen