TY  - BOOK
AU  - Withrow,Robert B.
ED  - Conference on Photoperiodism
TI  - Photoperiodism and related phenomena in plants and animals: proceedings,
T2  - American Association for the Advancement of Science. Publication
U1  - 574.52 
PY  - 1959///
CY  - Washington
PB  - American assiociation
KW  - Photoperiodism
KW  - Congresses
N1  - Includes bibliographies and index
ER  -