924 resultados para asexual reproduction


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Living Heterostegina depressa were found in the Persian Gulf on shallows and sides of islands in the Central Basin. Preliminary culture experiments furnished information on life span, salinity tolerances and population density of species. Reproduction processes (probably asexual) could be observed several times. A possible carbonate production of ca. 150 g/year/m**2 has been estimated.

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"This first edition ... printed in Germany."

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Facsimile of the Codex Puteanus (now Ms. lat. 5730 in the Bibliothèque nationale, Paris) containing the third decade, or book XXI (chap. 20 [sect. 8-chap. 21] [sect. 13; chap. 29] [sect. 6-chap. 30] [sect. 11; chap. 41] [sect. 13 to end (chap. 63)); books XXII-XXIX; book XXX (chap. 1-30 [sect. 14; chap. 37] [sect. 3-chap. 38] [sect. 3])

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"Il a été tiré de cet ouvrage 410 exemplaires dont: 10 exemplaires, texte et planches sur papier du Japon, numérotés de 1 à 10; 400 exemplaires, texte et planches sur vélin, numérotés de 11 à 410"--Prelim. leaf.