00369nam a2200145Ia 4500008004100000082001600041100001900057245002100076260005000097300000800147650001800155650002400173653001200197653001400209170901s1958    xx            000 0 und d  a595.7bW52I  aWilliams, C. B 0aInsect Migration  aLondonbWillmer Brothers and Haram Ltd.c1958  a235  aPure Sciences  aZoological sciences  aInsects  aMigration