P. A. Mullenhoff

Effects of PCBs, DDT, and mercury compounds upon egg production, hatchability and shell quality in chickens and Japanese quail.

R. Rice, M. L. Scott, G. Rumsey, 1975, Poultry science.

The Calcium Requirements of Laying Hens and Effects of Dietary Oyster Shell Upon Egg Shell Quality

M. L. Scott, P. A. Mullenhoff, S. Hull, 1971 .