@article{480145, recid = {480145}, author = {Greenberg, Joel S. and Hertzfeld, Henry.}, title = {Space economics [electronic resource] /}, publisher = {American Institute of Aeronautics and Astronautics,}, address = {Washington, D.C. :}, pages = {xv, 437 p. :}, year = {1992}, url = {http://library.usi.edu/record/480145}, }