Pettingill, Olin Sewall.
A laboratory and field manual of ornithology / Olin Sewall Pettingill ; illustrated by Walter J. Breckenridge. - 3rd ed. - Minneapolis : Burgess Pub. Co., c 1956. - 379 p.: ill. ; 29 cm.
300 300
Ornithology.
598.2072 / P764l
A laboratory and field manual of ornithology / Olin Sewall Pettingill ; illustrated by Walter J. Breckenridge. - 3rd ed. - Minneapolis : Burgess Pub. Co., c 1956. - 379 p.: ill. ; 29 cm.
300 300
Ornithology.
598.2072 / P764l