Gellis , allen c . dissertation suspended-sediment characteristics in four humid tropical watersheds of contrasting land use , puerto rico . [[Book] /] allen c gellis . - usa : ProQuest Information and Learning, 2004. - 697 p v 1. All Ages. Subjects--Topical Terms: sediment transport-chesapeake bay . Dewey Class. No.: 551.3'53'0975 National Library of Medicine Call No.: 551.3'53'0975 / GD