Results 171 to 180 of about 44,970 (212)

Colombia Medica: A decade of transformation and growth. [PDF]

open access: yesColomb Med (Cali)
Bravo LE   +6 more
europepmc   +1 more source

[Methodological and ethical congruence in medical research protocols at a local hospital committee]. [PDF]

open access: yesRev Med Inst Mex Seguro Soc
Lugo-Machado JA   +2 more
europepmc   +1 more source

El mercat del petroli [PDF]

open access: yes, 2009
Marzo, Mariano
core  

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