942 resultados para North-American collections (Tulane and Vanderbilt)
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"August 1998" -- Cover.
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Includes index.
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Contribution from Bureau of Entomology and Plant Quarantine.
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Spine title: Bibliography of North American Indian art.
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Also issued under title: Indian captivities.
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Sabin 69691.
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Reply to Louis Hue Girardin's "Pulaski vindicated from an unsupported charge inconsiderately or malignantly introduced in Judge Johnson's Sketches of the life and correspondence of Major Gen. Nathaniel Greene."
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MS. date: Jan. 1, 1847.
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Mode of access: Internet.
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Mode of access: Internet.
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Mode of access: Internet.
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Pollen and seed proteins of seven selected North American and Puerto Rican Typha populations were compared using two serological methods and disc electrophoresis. These methods were capable of discriminating among all taxa studied: Typha latifolia, T. angustifolia, T. X glauca, and T. domingensis. The two hybrid populations were found to contain proteins not found in either parent. Typha domingensis was serologically the most distinct of the four taxa. The diagnostic morphological characteristics for Typha species were studied in all populations, and statistical comparisons are presented. Data from the morphological observations agreed with the information obtained from the chemosystematic research. All data indicate that the three taxa should be maintained as separate species. The hybrid nature of the putative T. X glauca is verified by both the biochemical and morphological data. Observed morphological and biochemical differences support taxonomic treatments in which T. domingensis is designated as a separate species.
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This paper reports a study that examined hotel reservation services on travel websites. Using a systematic search, 90 travel websites were selected with an equal number of North American-based, European-based, and Asia Pacfic-based websites. These regions represent the areas of the world with the most Internet users. Based on the developed framework of information quality, the contents of the selected travel websites were evaluated. Be empirical results indicated that the travel websites achieved different levels of quality in online information, and that North American-based websites performed significantly better in some attributes.