VERMA, R. M. (1994). Analytical chemistry: Theory and practice. CBS Publishers.
Lua i Stíl Chicago (17ú heag.)VERMA, R. M. Analytical Chemistry: Theory and Practice. CBS Publishers, 1994.
Lua MLA (9ú heag.)VERMA, R. M. Analytical Chemistry: Theory and Practice. CBS Publishers, 1994.
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