机读格式显示(MARC)

• 000 00954cam 2200277 a 4500

• 000 1000000121

• 001 0000273919

• 005 20060616140554.0

• 008 19700710s1968 it b 00010 eng

• 040 __ |a CAU

• 050 0_ |a SF98.U7 |b L6

• 082 __ |a 636.2/08/557

• 090 __ |a FAO/S852.2/FAO

• 100 1_ |a Loosli, John K.

• 245 10 |a Nonprotein nitrogen in the nutrition of ruminants / |c by J. K. Loosli and I. W. McDonald.

• 260 __ |a Rome : |b Food and Agriculture Organization of the United Nations, |c 1968.

• 300 __ |a viii, 94 p. ; |c 23 cm.

• 490 1_ |a FAO Agriculture studies, 75

• 504 __ |a Bibliography: p. [79]-94.

• 650 _0 |a Urea as feed.

• 700 1_ |a MacDonald, Ian Wilbur, |e joint author.

• 830 _0 |a FAO agricultural studies ; |v no. 75.

• 901 __022006013461

• 905 __ |a CAU |f FAO/S852.2/FAO |b 36452(or.)

• 907 __ |a CAU |f FAO/S852.2/FAO |b 36452(or.)

• 999 __ |t E |A xy1 |a 20060616 14:05:37 |G unknown |g 19980101 |I xy1 |i 20060616 14:05:5