| 000 | 00941nam a22001937a 4500 | ||
|---|---|---|---|
| 005 | 20230427153325.0 | ||
| 008 | 230422b |||||||| |||| 00| 0 eng d | ||
| 040 |
_6HSLRC _aHSLRC _cHSLRC |
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| 050 |
_aTD 430 _bV36 2019 |
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| 100 |
_aSan Jose, Nina Elaine C. _929988 |
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| 245 | _aDetermining the pH level of water in different water stations in Barangay Concepcion Uno, Marikina City in correspondence to the environment protection agency standards with the use of litmus paper. | ||
| 260 |
_aMarikina City _cMarch 2019 |
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| 300 |
_avi, 55pages; _billustration; _c 28cm |
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| 500 | _aIncludes: references and appendices | ||
| 650 |
_a1. Drinking water -- Philippines -- Standards _929989 |
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| 700 |
_a Mary Margarette R. Montalla, Louise Sheanne S. Opeña, Darren Paul S. Pascual, Arthur Vince Ivan P. Racoma, Jose Emilio V. Ricafrante and Leandro M. Zamora _930309 |
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| 942 |
_2lcc _cTHE |
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| 999 |
_c88200 _d88200 |
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