TY  - BOOK
AU  - Maas,James B.
AU  - Wherry,Megan L.
TI  - Power sleep: the revolutionary program that prepares your mind for peak performance 
SN  - 0060977604
AV  - RA 786 M33.1999
PY  - 1999///
CY  - New York
PB  - HarperPerrenial
KW  - Sleep
KW  - Sueño
N1  - Incluye referencias bibliográficas e indice
UR  - http://www.loc.gov/catdir/enhancements/fy0917/2004304131-d.html
ER  -