01166nam 2200325 n 450 99639085680331620221108084443.0(CKB)1000000000662713(EEBO)2240951422(UnM)99853160(EXLCZ)99100000000066271319920604d1635 uy |engurbn||||a|bb|A discourse mathematical on the variation of the magneticall needle[electronic resource] Together with its admirable diminution lately discovered. By Henry Gellibrand professor of astronomie in Gresham CollegeLondon Printed by William Iones, dwelling in Red-crosse-street1635[2], 22 pReproduction of the original in the Bodleian Library.eebo-0014GeomagnetismEarly works to 1800GeomagnetismGellibrand Henry1597-1636.1004330Cu-RivESCu-RivESCStRLINWaOLNBOOK996390856803316A discourse mathematical on the variation of the magneticall needle2308806UNISA