What has the author Gay Gaer Luce written?

Gay Gaer Luce has written:

'Longer life, more joy' -- subject(s): Aging, Longevity, Mind and body, Psychological aspects, Psychological aspects of Aging, Self-actualization (Psychology) in old age

'Body time' -- subject(s): Biological rhythms, Stress (Physiology)

'Le sommeil'

'Biological rhythms in psychiatry and medicine'

'Insomnia; the guide for troubled sleepers' -- subject(s): Insomnia