Rittenhouse built one of these observatories at his home as well as constructing most of the astronomical instruments to be used in it.
Rittenhouse built one of these observatories at his home as well as constructing most of the astronomical instruments to be used in it.
user
Ріттенхаус побудував одну з цих обсерваторій у своєму домі, а також побудови більшості астрономічних інструментів, які будуть використовуватися в ньому.
assistant