TY - BOOK AU - Horwitz,William ED - Association of Official Analytical Chemists TI - Official methods of analysis of the Association of Official Analytical Chemists SN - 0-935584-14-5 PY - 1980/// CY - Washington PB - Association of Official Analytical Chemists KW - Química Analítica KW - Metodología KW - Chemistry, Analytic KW - Methodology ER -