Pitard, Francis F. <br/><br/>
Pierre Gy's sampling theory and sampling practice / 
Francis F. Pitard. 
 - Boca Raton, Fl. :  CRC Press,  1989. 
 - 247 p. :  ill. 
<br/><br/>v. 1. Heterogeneity and sampling. -- v. 2. Sampling correctness and sampling practice. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ores--Sampling and estimation.