The flora of Guam : a manual for the identification of the vascular plants of the island / by Benjamin C. Stone ; with numerous photographs and line drawings and foreword by Pedro C. Sanchez. Vol. 6, [Suppl. 1]: The Flora of Guam : a manual for the identification of the vascular plants of the island, 1970-71   .  Agana :  University of Guam,  1971 . 659 s.