TY  - BOOK
AU  - Thommen,George S.
TI  - Is this your day?: How biorhythm helps you determine your life cycles,
AV  - QH527 .T48 1964
PY  - 1964///]
CY  - New York
PB  - Crown Publishers
KW  - Biological rhythms
N1  - Bibliography: p. 137-139
ER  -