Notes on assaying and assay schemes /
Ricketts, Pierre De Peyster M. 1918,
Notes on assaying and assay schemes / By Pierre de peyster ricketts - 6 # ed, rev and enl - 210 páginas
Ensayos
TN500 / R52 1882
Notes on assaying and assay schemes / By Pierre de peyster ricketts - 6 # ed, rev and enl - 210 páginas
Ensayos
TN500 / R52 1882