机读格式显示(MARC)

• 000 01242cam 2200337 a 4500

• 000 1000082099

• 001 0000305787

• 005 20070426141955.0

• 008 811109s1939 pauab 000 0 eng

• 010 __ |a a 41004361

• 020 __ |c CNY10.00

• 040 __ |a DLC |c CarP |d DLC

• 043 __ |a n-us---

• 050 00 |a S441 |b .N3 no. A-10

• 090 __ |a S512/ERB

• 093 __ |a S512 |2 4

• 100 1_ |a Elwood, Robert B. [from old catalog]

• 245 10 |a Changes in technology and labor requirements in crop production : |b wheat and oats / |c by Robert B. Elwood ... [et al.].

• 260 __ |a Philadelphia, Pa., |c 1939.

• 300 __ |a xv, 182 p. : |b ill., maps ; |c 26 cm.

• 650 _0 |a Agricultural laborers |z United States. [from old catalog]

• 650 _0 |a Agricultural machinery. [from old catalog]

• 650 _0 |a Wheat |z United States. [from old catalog]

• 650 _0 |a Oats. [from old catalog]

• 700 1_ |a McKibben, Eugene George, |d 1895- [from old catalog]

• 700 1_ |a Arnold, Lloyd E., [from old catalog]

• 700 1_ |a Schmutz, D. Clarence, [from old catalog]

• 901 __022007000795

• 905 __ |a CAU |f S512/ERB |b E0210457(or.)

• 907 __ |a CAU |f S512/ERB |b E0210457(or.)

• 999 __ |t C |A gxr |a 20070314 16:26:50 |I wzhlc |i 20070426 14:19:55 |G wzhlc |g 20070426 14:20:0