TY - GEN CY - [London, DA - 1770?] ID - 521403 LK - https://univsouthin.idm.oclc.org/login?url=http://find.gale.com/ecco/infomark.do?contentSet=ECCOArticles&docType=ECCOArticles&bookId=0797800200&type=getFullCitation&tabID=T001&prodId=ECCO&docLevel=TEXT_GRAPHICS&version=1.0&source=library&userGroupName=usi N1 - Drop-head title. N1 - Reproduction of original from British Library. PP - [London, PY - 1770?] T1 - Explanation of the principles and use of a new constructed quadrant TI - Explanation of the principles and use of a new constructed quadrant UR - https://univsouthin.idm.oclc.org/login?url=http://find.gale.com/ecco/infomark.do?contentSet=ECCOArticles&docType=ECCOArticles&bookId=0797800200&type=getFullCitation&tabID=T001&prodId=ECCO&docLevel=TEXT_GRAPHICS&version=1.0&source=library&userGroupName=usi ER -