LECTURAS

http://www.scribd.com/doc/110100488/lectura1U2#fullscreen
LECTURA UD 2
http://www.scribd.com/doc/112589819/lectura2U2#fullscreen
lectura complementaria
http://www.scribd.com/doc/112589877/Lectura1U3#fullscreen
lectura unidad 3
http://www.scribd.com/doc/112589916/lectura2U3#fullscreen
lectura complementaria
http://www.scribd.com/doc/112590853/lectura2U1#fullscreen
lectura complementaria