机读格式显示(MARC)

• 000 01199nam 2200313 a 4500

• 000 1000084413

• 001 0000308033

• 005 20070910093623.0

• 008 070611s1943 iauab f000 0 eng d

• 020 __ |c CNY10.00

• 040 __ |a CAU |c CAU

• 050 00 |a S61

• 082 00 |a 630.7

• 090 __ |a S22/HEO

• 093 __ |a S22 |2 4

• 100 1_ |a Heady, Earl Orel, |d 1916-

• 245 10 |a Cost, distribution and utilization of farm machinery in Iowa / |c by Earl O.Heady, John A.Hopkins and Eugene G.McKibben.

• 260 __ |a Ames, Iowa : |b Agricultural Experiment Station, Iowa State College of Agriculture and Mechanic Arts, |c 1943.

• 300 __ |a p. 60-104 : |b ill., map ; |c 23 cm.

• 490 1_ |a Research bulletin ; |v 323

• 650 _0 |a Agricultural machinery |z Iowa.

• 650 _0 |a Agricultural machinery |z Iowa |x Cost of operation.

• 700 1_ |a Hopkins, John A. |q (John Abel), |d 1897-

• 700 1_ |a McKibben, Eugene G. |q (Eugene George), |d 1895-

• 830 _0 |a Research bulletin (Iowa Agricultural Experiment Station) ; |v 323.

• 901 __022007003305

• 905 __ |a CAU |f S22/HEO |b E0210732(or.)

• 907 __ |a CAU |f S22/HEO |b E0210732(or.)

• 999 __ |t A |A gxr |a 20070611 16:09:50 |I wzhlc |i 20070910 09:36:23 |G wzhlc |g 20070910 09:36:3