Rocks, shells, fossils, minerals & gems : the complete collector's companion
ed. by Harriet Stewart-Jones
Grange Books, 1998
Buku Referensi
Moody, Richard
Field guide fossils
Chancelor, 1994
Buku Teks
Murray, Michael T.
Stress, anxiety and insomnia: how you can denefit from dict, vitamins, minerals, herbs, exercise and other natural methods
Prima, 1995
Buku Teks SO
Pearl, Richard M.
How to know the minerals and rocks / Richard M. Pearl
McGraw-Hill, 1955
Buku Teks
Gribbin, John
Almost everyone?s guide to science : the universe, life, and everything
Yale University Press, 1999
Buku Referensi