TY  - ART
TI  - Profitable culling and selective flock breeding; complete details regarding the latest approved methods for culling, or the selection of layers, simple and practical instructions for securing permanent improvement in egg production in any flock — Illustration, Page 50
PY  - 1920
UR  - https://www.biodiversitylibrary.org/page/25111446
ID  - page-25111446
ER  -