1. Relation of the candling appearance of eggs to their quality;Almquist;California Expt. Sta. Bul.,1933
2. Relation of egg shell mottling to internal quality;Baker,1954
3. A study of shell texture of the hen’s egg;Holst;Poultry Sci.,1932
4. Effect of high humidity on egg quality during short holding periods;Jeffrey;New Jersey Agr. Exp. Sta. Bul.,1940