94a44726259032e00c9e6b57b7d7ad6c pqa1de2.pdf /mnt/CLARIION/ddd/pub/tesis/2001/hdl_10803_4825/pqa1de2.pdf c22c99be28c19b29a2198446bb92bf91 pqa2de2.pdf /mnt/CLARIION/ddd/pub/tesis/2001/hdl_10803_4825/pqa2de2.pdf