 | Eggs Grading. | (2) |
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 | Egg grading manual / . Washington, D.C. : U.S. Dept. of Agriculture, Consumer and Marketing Service, 1968. | |
| An egg grading and processing plant for high-volume production / . Harris, Clarence. 2n Washington, D.C. : Agricultural Research Service, U.S. Dept. of Agriculture, 1969. | |
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