TY - BOOK ID - 137424806 TI - Speculum nauticum : a looking glasse for sea-men : wherein they may behold a small instrument called the plain scale whereby all questions nautical and propositions astronomical are very easily and demonstratively wrought ... PY - 1647 PB - London : Printed by Thomas Harper and are to be sold by George Hurlock, DB - UniCat KW - Navigation KW - Nautical astronomy. UR - https://www.unicat.be/uniCat?func=search&query=sysid:137424806 AB - eebo-0018 ER -