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  1. 1

    An improved method for evaluating microbiological quality of drinking water using the H2S paper strip test door De Sales-Papa, Louernie F.

    Gepubliceerd in 2011
    Thesis

    An improved method for evaluating microbiological quality of drinking water using the H2S paper strip test
  2. 2

    A study of the acid-base indicators found in the coloring matter of some plants door Velasco, Josefa (Flores) 1923-

    Gepubliceerd in 1967
    Thesis

    A study of the acid-base indicators found in the coloring matter of some plants
  3. 3

    A study of the acid-based indicators found in the coloring matter of some plants door Flores-Velasco, Josefa

    Gepubliceerd in 1967
    Thesis

    A study of the acid-based indicators found in the coloring matter of some plants
  4. 4

    Chemical indicators door Tomicek, Oldrich

    Gepubliceerd in 1951
    Boek

    Chemical indicators
  5. 5

    Visual humidity indicators (indicating humidity by color change in gas atmospheres) door Abad, Ramona (Vivera) 1935-

    Boek

    Visual humidity indicators (indicating humidity by color change in gas atmospheres)

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