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281
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282
A framework for the organization of research and development activities in engineering and related fields
Argitaratua izan da Philippine Engineering Journal (1981)Artikulua -
283
-
284
-
285
-
286
-
287
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288
Waterworks and sewerage/water resources management
Argitaratua izan da Philippine Engineering Journal (1981)Artikulua -
289
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290


