Harold D. Babcock1882 — 1968 · 2 obras en el catálogoObrasNNoted on the polarization of the north skyNoted on the polarization of the north skyTThe solar spectrum, [symbol for lambda]6600 to [symbol for lThe solar spectrum, [symbol for lambda]6600 to [symbol for lambda]13495
TThe solar spectrum, [symbol for lambda]6600 to [symbol for lThe solar spectrum, [symbol for lambda]6600 to [symbol for lambda]13495