Ferguson (James). Astronomy explained upon Sir Isaac Newton's Principles

Ferguson (James). Astronomy explained upon Sir Isaac Newton's Principles, eighth edition, engraved plates, nineteenth century polished calf, gilt spine, morocco label, 1790 - and 2 others, Ludlam's Rudiments of Mathematics, third edition, contemporary sprinkled calf, 1790 and The Young Algebraist's Companion, fourth edition, 1772 (3)