00341nam a2200121Ia 4500008004100000082002500041100002400066245002600090250001200116260004200128300001000170650003900180140113s9999    xx            000 0 und d  a595.7:58.036.0352 M0  a" Beck, Stanley D."  aInsect photoperiodism  a2nd Ed.  b"New York : Academic Press Inc, 1980"  a387p.  aInsect physiology ; Photoperiodism