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  1. Manual de plantas de Costa Rica /
    By: Grayum, Michael Howard, - Hammel, Barry Edward, - Herrera, Cecilia. - Zamora Villalobos, Nelson.
    Publication info: St. Louis, Mo. :Missouri Botanical Garden,2003-
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
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  1. Flora Costaricensis: Family #97 Krameriaceae, Family #98 Oxalidaceae, Family #99 Geraniaceae, Family #100 Tropaeolaceae, Family #101 Linaceae, Family #101a Humiriaceae, Family #102 Erythroxylaceae, and Family #103 Zgyophyllaceae
    By: Burger, William C - Simpson, Beryl B - Zamora Villalobos, Nelson. - Plowman, Timothy,
    Type: Article
    In: Flora Costaricensis /
    Volume: 28
    Date: 1991-10-31
    Page Range: 1--43
    Publication info: Chicago, Ill. :Field Museum of Natural History,1991.
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  2. Nuevas Especies y Combinaciones en Leguminosas de Mesoamérica
    By: Zamora Villalobos, Nelson.
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden.
    Volume: 10
    Date: 2000
    Page Range: 175--180
    Publication info: St. Louis, MO :Missouri Botanical Garden,
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  3. Sinopsis del género Laetia (Salicaceae) en Mesoamérica y la descripción de una nueva especie
    By: Santamaria-A, D - Zamora Villalobos, Nelson. - F, Y R Aguilar
    Type: Article
    In: Phytoneuron
    Volume: 2015-15
    Date: 2015
    Page Range: 1--19
    Publication info: Fort Worth, TX :Guy L. Nesom
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  4. Una nueva Ayenia (Sterculiaceae) con nectarios foliares de Costa Rica
    By: Arbo, M M - Cristóbal, Carmen L. - Zamora Villalobos, Nelson.
    Type: Article
    In: Novon a journal of botanical nomenclature from the Missouri Botanical Garden.
    Volume: 2
    Date: 1992
    Page Range: 48--52
    Publication info: St. Louis, MO :Missouri Botanical Garden,
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  5. Una Nueva Especie de Caryodaphnopsis Airy Shaw (Lauraceae) Para La Region Neotropical
    By: Zamora Villalobos, Nelson. - Poveda, Luis J - Canessa-Amador, Edwin
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 75
    Date: 1988
    Page Range: 1160--1166
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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  6. Una Nueva Especie de Guettarda L. (Rubiaceae, Guettardeae) Para Costa Rica
    By: Zamora Villalobos, Nelson. - Poveda, Luis J
    Type: Article
    In: Annals of the Missouri Botanical Garden
    Volume: 75
    Date: 1988
    Page Range: 1157--1159
    Publication info: St. Louis :Missouri Botanical Garden Press,1914-
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