Ergonomics in tropical agriculture and forestry : proceedings of the Fifth Joint Ergonomic Symposium organized by the Ergonomic Commissions of IAAMRH, CIGR and IUFRO, Wageningen, the Netherlands, May 14-18, 1979 / editors, J.H. van Loon, F.J. Staudt and J. Zander.
Ergonomics in tropical agriculture and forestry : proceedings of the Fifth Joint Ergonomic Symposium organized by the Ergonomic Commissions of IAAMRH, CIGR and IUFRO, Wageningen, the Netherlands, May 14-18, 1979 / editors, J.H. van Loon, F.J. Staudt and J. Zander.