Solar irrigation program
Alvis, R.L.
Solar irrigation program Status report, October 1976 through January 1977 by Robert L. Alvis - Springfield National Technical Information Service 1977 - 64 p.
Solar Irrigation
631.67:620.91:523.72 / A373S
Solar irrigation program Status report, October 1976 through January 1977 by Robert L. Alvis - Springfield National Technical Information Service 1977 - 64 p.
Solar Irrigation
631.67:620.91:523.72 / A373S