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Modification of the Micrometer‐head, devised Mr. Joseph A. Royers , Aid U. S. Naval Observatory
Author(s) -
Gilliss J. M.
Publication year - 1865
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.18650630405
Subject(s) - observatory , citation , head (geology) , physics , computer science , library science , astronomy , geology , geomorphology