How to candle eggs
Pennington, M.E., Jenkins, M.K., Betts, H.M.P.
How to candle eggs - Washington 1918 - 1-20 p. - Eggs United States Department of Agriculture. Bulletin No. 565 .
How to candle eggs - Washington 1918 - 1-20 p. - Eggs United States Department of Agriculture. Bulletin No. 565 .