By Dixson, Robert J.
USA : Regents Publishing Company , 1943 .
182 p. ; 22 cm.
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USA : Joseph Ryerson, 1960 .
256 p. : 21 cm.

By Burton, Jeff.
USA : Reynolds Graphics, 1997 1883992168

By Collins, David.
USA : The Clipper Goup Ed., 1992 .
637 p. , LIFBI. 8479257146

By Haestad Methods.
Waterbury (USA) : Haestad, 2003 .
751 p. : , Contiene CD-0005. 27 cm.
0971414122

By Haestad Methods.
Waterbury (USA) : Haestad Press, 2001 .
441 p. : , Incluye 2 CD-ROM. 27 cm.
0965758044

By Haestad Methods.
Waterbury (USA) : Haestad Press, 2003 .
688 p. : , Contiene 2 CD cada libro. 27 cm.
0965758087

By Haestad Methods.
Waterbury (USA) : Haestad Press, 2002 .
375 p. : , Contiene CD-0006. | Incluye 2 CD-ROM. 23 cm.
0971414149

By Haestad Methods.
Waterbury (USA) : Haestad Press, 2003 .
696 p. : , Incluye 2 CD-ROM. 27 cm.
09071414106

USA : American Society of Agricultural Enginess, 1992 .
221 p. : 21x29 cm.
0929355318

By Smith, Brian.
California,USA : Elsevier Science, 2002 .
200 p. ; 24x16 cm.
0126503583

USA : Geol.Soc.of America, 1941 .
578 p. ; 25 cm.