00283nam a22001097a 4500003000400000008004100004082002000045100001800065245006300083260001900146300000800165OSt240308b        |||||||| |||| 00| 0 eng d  a574.19195bC53P  aWithrow ,R.B.  aPhotoperiodism and related phenomena in plants and animals  aA.A.A.S.c1959  a903