Author · 1913 – .
Richard Maxwell Pearl
Gems, minerals, crystals, and ores
Richard Maxwell Pearl
Gems, minerals, crystals, and ores
How to know the minerals and rocks.
Richard Maxwell Pearl
How to know the minerals and rocks.
1001 questions answered about the mineral kingdom
Richard Maxwell Pearl
1001 questions answered about the mineral kingdom
Colorado gem trails and mineral guide
Richard Maxwell Pearl
Colorado gem trails and mineral guide
Geology
Richard Maxwell Pearl
Geology
Popular gemology.
Richard Maxwell Pearl
Popular gemology.
Rocks and minerals
Richard Maxwell Pearl
Rocks and minerals
1001 questions answered about earth science
Richard Maxwell Pearl
1001 questions answered about earth science
Atlas of crystal stereograms
Richard Maxwell Pearl
Atlas of crystal stereograms
Guide to geologic literature.
Richard Maxwell Pearl
Guide to geologic literature.
Nature as sculptor
Richard Maxwell Pearl
Nature as sculptor
Colorado gem trails
Richard Maxwell Pearl
Colorado gem trails
All 29 works
1001 answers to questions about earth science
Richard Maxwell Pearl
1001 answers to questions about earth science
American gem trails
Richard Maxwell Pearl
American gem trails
An introduction to the mineral kingdom
Richard Maxwell Pearl
An introduction to the mineral kingdom
Cleaning and preserving minerals
Richard Maxwell Pearl
Cleaning and preserving minerals
Colorado rocks, minerals, fossils
Richard Maxwell Pearl
Colorado rocks, minerals, fossils
Exploring rocks, minerals, fossils in Colorado
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