Ferrer, M. P. L., & Elumba, P. S. Fit-testing procedures of selected manufacturing companies in Metro Manila.
Lua i Stíl Chicago (17ú heag.)Ferrer, Mary Patrick Lorenzo, agus Patricia Santos Elumba. Fit-testing Procedures of Selected Manufacturing Companies in Metro Manila. 2008.
Lua MLA (9ú heag.)Ferrer, Mary Patrick Lorenzo, agus Patricia Santos Elumba. Fit-testing Procedures of Selected Manufacturing Companies in Metro Manila.
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