Similar Material it-2 “Poplars” Poplars Aid to Bible Understanding Willows—A Versatile Family of Trees Awake!—2007 Willow Insight on the Scriptures, Volume 2 Willow Aid to Bible Understanding A Tree “the Foliage of Which Does Not Wither” The Watchtower Announcing Jehovah’s Kingdom—2009 Euphrates Insight on the Scriptures, Volume 1 Cypress Aid to Bible Understanding Euphrates Aid to Bible Understanding Cypress Insight on the Scriptures, Volume 1 Trees Aid to Bible Understanding