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Gerard of Cremona (Latin: Gerardus Cremonensis; c. 1114 – 1187) was an Italian translator of scientific books from Arabic into Latin. This is a short tract covering the twelve houses of astrology. Not really knowing about these things, I'm not sure why the title mentions Astronomy and the contents, Astrology, but there you go. I'm sure people who understand this sort of thing will get it though.
This book has 18 pages in the PDF version.
Production notes: This ebook of On Astronomical Geomancy was published by Global Grey in 2018.