4 résultats

publ. under the joint sponsorship of the United Nations environment programme, the International labour organisation, and the World health organization, Van Heemstra-Lequin E.A.H, Van Hesch G.T | World health organization | 1992

Programme international sur la sécurité des substances chimiques, first draft prepared by Dr G. T. van Esch,... and Dr E. A. H. van Heemstra-Lequin,..., published under the joint sponsorship of the United Nations environment programme, the International labour organisation, and the World health organisation, Esch G. J. van, Van Heemstra-Lequin E. A. H. | World health organization | 1992

Programme international sur la sécurité des substances chimiques, first draft prepared by Dr E. A. H. van Heemstra-Lequin and Dr G. J. van Esch,..., published under the joint sponsorship of the United Nations environment programme, the International labour organisation, and the World health organization, Van Heemstra-Lequin E. A. H., Esch G. J. van | World health organization | 1992

Lequin G. | [s. n.] | 1921