Observing by Hand: Sketching the Nebulae in the Nineteenth CenturyLibro electrónicoObserving by Hand: Sketching the Nebulae in the Nineteenth CenturydeOmar W. NasimCalificación: 3 de 5 estrellas3/5Guardar Observing by Hand: Sketching the Nebulae in the Nineteenth Century para después