"Productividad Congresos y asambleas." . . "Productivity research Congresses." . . "Symposium on Rann, Research Applied to National Needs 1o. 1973 Washington." . . . . . "National Science Foundation (Estados Unidos) Research Applied to National Needs Program." . . "Symposium on RANN: Research Applied to National Needs (1er : 1973 : Washington, D.C.)" . . . "Politique énergétique États-Unis Congrès." . . "Energy development Congresses." . . "Symposium on RANN (Research Applied to National Needs) (1 : 1973.11 : Washington, DC)" . . . "Environmental protection Congresses." . . "National Science Foundation (U.S.). National Science Foundation. Research Applied to National NeedsProgram Program." . . "Medio ambiente Protección Congresos y asambleas." . . "Symposium on RANN: Research Applied to National Needs (1st : 1973 : Washington, D.C.)" . . . "Symposium on RANN, Research Applied to National Needs (1st : 1973 : Washington, D.C.)" . "Recursos energéticos Congresos y asambleas." . . "Environnement Politique gouvernementale États-Unis Congrès." . . . . . . . . . "Energy, environment, productivity proceedings of the first Symposium on RANN-Research Applied to National Needs, Washington, D.C., November 18-20, 1973"@en . . . . . . "Energy, environment, productivity : proceedings of the first Symposium on RANN: Research Applied to National Needs, Washington, D. C., November 18-20, 1973" . . . . . . "Energy, environment, productivity : proceedings of the First Symposium on RANN: Research Applied to National Needs, Washington, DC, November 18-20, 1973" . . . "Energy, environment, productivity proceedings of the first Symposium on RANN: Research Applied to National Needs, Washington, D.C., November 18-20, 1973"@en . "Energy, environment, productivity : proceedings of the First Symposium on Rann : Research Applied to National Needs, Washington, D. C., November 18-20, 1973" . . . . . . . . . . "Conference papers and proceedings" . "Conference papers and proceedings"@en . . . "Energy, environment, productivity : proceedings of the first Symposium on RANN-Research Applied to National Needs, Washington, D.C., November 18-20, 1973" . . . . . . . . . . . . .