Photoperiodism and related phenomena in plants and animals proceedings edited by Robert B. Withrow, with the cooperation of Arthur C. Giese [and others]. - Washington 1959. - xvii, 903 p. illus., diagrs., tables. - American Association for the Advancement of Science. Publication no. 55 . - Publication (American Association for the Advancement of Science) no. 55. .

59010144 //r85


Photoperiodism--Congresses.

QH651 / .C6 1957

574.52