Penman, H.L.. (1986). Scientific aspects of irrigation schemes : a royal society discussion / organized by H.L. Penman ... [et al.]. London :: The Royal Society,.
Penman, H.L.. Scientific aspects of irrigation schemes : a royal society discussion / organized by H.L. Penman ... [et al.]. London :: The Royal Society,, 1986
Penman, H.L.. Scientific aspects of irrigation schemes : a royal society discussion / organized by H.L. Penman ... [et al.]. London :: The Royal Society,, 1986.