The principal salinity extrema and extremum surfaces of the
world ocean are described by the analysis and plotting of data from
885 hydrographic stations in the three major oceans, the Southern
Ocean, and the American Mediterranean Sea. The distributions of
salinity, temperature, depth, and density along the extremum surfaces,
plotted...
The nonagricultural lands of the world are being called upon today to satisfy tremendous
demands from society at all levels of economic development. Until recently, costs of management
of many of these lands were too high to warrant appreciable management investment for
the relatively low yields. Society is beginning to...