Sleeping habits of SIS fourth year high school students school year 1997-1998 /
Lee, Hee Soo.
Sleeping habits of SIS fourth year high school students school year 1997-1998 / Hee Soo Lee. - Las Piñas City, Philippines : Southville International School and Colleges, 1998. - various pagination : illustrations ; 29 cm.
Sleep--Health aspects--Philippines.
Sleep--Adolescents--Philippines.
PHS RA 786 / .L44 1998
Sleeping habits of SIS fourth year high school students school year 1997-1998 / Hee Soo Lee. - Las Piñas City, Philippines : Southville International School and Colleges, 1998. - various pagination : illustrations ; 29 cm.
Sleep--Health aspects--Philippines.
Sleep--Adolescents--Philippines.
PHS RA 786 / .L44 1998