00423nam a2200121Ia 4500008004100000082001800041100002000059245006000079260003600139365000600175630006000181730006000241100415s9999    xx            000 0 und d  b6774a598.591  aSpencer  Robert  aInstructions to Young Ornithologists III Bird Migration  aLONDONc1963bMUSEUM PRESS LTD.  b0  aInstructions to Young Ornithologists III Bird Migration  aInstructions to Young Ornithologists III Bird Migration