1. Official Methods of Analysis;Association of Official Analytical Chemists,1980
2. Effects of dietary calcium sources and particle size on laying hen performance;Blister;Poultry Sci.,1981
3. Effects of particle size on the availability of phosphorus in defluorinated phosphate for pigs;Burnell;J. Anim. Sci.,1988
4. Requirements, biological availability of calcium, phosphorus for swine evaluated;Cromwell;Feed-staffs,1989
5. Availability of calcium in feed grade phosphates to the chick;Dilworth;Poultry Sci.,1964