TY - BOOK ID - 136065205 TI - Methods of computation for estimating geochemical abundance PY - 1967 PB - Washington (D.C.): US. Government printing office DB - UniCat KW - Ores KW - -Geochemistry KW - Sampling and estimation UR - https://www.unicat.be/uniCat?func=search&query=sysid:136065205 AB - ER -