Claude Lightfoot: Or How the Problem Was Solved (Classic Reprint)

The New Egg Farm (Classic Reprint)

Some Answered Questions (Classic Reprint)

How to Tell the Sex of an Egg Before Incubation (Classic Reprint)

The Poultry and Egg Industry of Leading European Countries (Classic Reprint)

The Poultry and Egg Situation: September 1958 (Classic Reprint)

The Fertilization and Early Development of the Pigeon's Egg (Classic Reprint)

The Poultry and Egg Situation: July 16, 1954 (Classic Reprint)