2675
| Quenstedt, F. A.
| 1856
| Sonst und Jetzt: Populare Vortrage uber Geologie. Tubingen. (Not seen, pagination not known. Often cited in German papers dealing with agates.)
|
2676
| Quick, L.
| 1955
| Some Advice on Buying Opal Rough. Lapidary Journal, v. 9, no. 3, p. 280-282. (Originally published in Desert Magazine but volume and pages not known.)
|
2677
| Quick, L.
| 1963
| The book of agates and other quartz gems. Sir Isaac Pitman & Sons, London, and Chilton Book Company, Radnor, Pennsylvania. 232 pp.
|
2678
| Quick, L., and H. Leiper
| 1959
| Gemcraft. How to cut and polish gemstones. Chilton Book Company, Philadelphia, New York, London. 189 pp.
|