1
Published in 1983
Repository
2
Published in 1990
Repository
3
4
by Paucar, Betty; Gallegos, Patricio; Nieto C., Carlos; Córdova, Juan J.; Rodríguez I., Luis F.; Ochoa L., José; Williams, Roger
Published in 2000
Repository
5
Published in 1994
Repository
6
7
Published in 1990
Repository
8
Published in 1987
Repository
9
Published in 1994
Repository
10
11
12
13
14
15
Published in 1988
Repository
16
Published in 1994
Repository
17
18
19
20