1
Crop evapotranspiration : guidelines for computing crop water requirements /
Book
...FAO irrigation and drainage paper ;...
2
Use of N-015 in soil science and plant nutrition : interregional training course : Use of N-015 in soil science and plant nutrition : interregional training course. 0003 : FAO/IAEA interregional training course on the use of N-015 in soil science and plant nutrition. 0003 : Leipzig, 1979.
Book
3
Isotopes in biological dinitrogen fixation : Proceedings of an advisory group meeting : Wien, 21.11.77-25.11.77.
Book