机读格式显示(MARC)
- 008 19911010s1981 ph a b 00000 eng
- 245 02 |a A methodology for on-farm cropping systems research / |c H.G. Zandstra ... [et al.].
- 260 0_ |a Los Bonos, Laguna : |b IRRI., |c 1981.
- 300 __ |a [149] p. : |b ill. ; |c 23 cm.
- 504 __ |a Bibliography: p. [94]-102.
- 650 _0 |a Cropping systems |x Methodology.
- 905 __ |a CAU |f S344/MOC |b 48254-5(or.) |b 48592(or.) |b 44723(or.) |b 43138(or.) |b 43647(or.)
- 907 __ |a CAU |f S344/MOC |b 48254-5(or.) |b 48592(or.) |b 44723(or.) |b 43138(or.) |b 43647(or.)
- 999 __ |M yu |m 1999030311172