Bundick, Paul L. ed.
Appropriate technology information for developing countries : selected abstracts from the NTIS data file - 3rd ed. - [s.l.] [s.n.] 1979 - xxx, 453p. : tables
014.3:62.001.8 / U6
Appropriate technology information for developing countries : selected abstracts from the NTIS data file - 3rd ed. - [s.l.] [s.n.] 1979 - xxx, 453p. : tables
014.3:62.001.8 / U6