共 2 条
[1]
shenk et al.1982. Estimates of intake and quality.of grazed range forage by NIR reflectance spectroscopy J. Ward,R. G. J. S. Animal Science Journal .
[2]
S et al.1977. Application of infrared reflectance analysis to feedstuff evalution proceedings of the Ist International symp.on feed composition.animal nutritient requirements and computerisation of requirements and computerisation of diets Utah, U. Shenk,J. S.A .