Wide awake at 3:00 A.M. by choice or by chance?

Manylion Llyfryddiaeth
Prif Awdur:	Coleman, Richard M. (Richard Mark)
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	New York W.H. Freeman c1986.
Pynciau:	Sleep-wake cycle. Circadian rhythms. Jet lag > Prevention.