ORG the invitation of Charles II and his ministers, grappled that long-term ones threatened its independence with problems of national food supply, arboriculture, naval architecture and navigation. B Radio astronomers are able to study the more distant parts of the Milky Way A In Japan, steel expansion has been subsidized for several years C Since then it has been possible to observe celestial bodies on radio wavelengths B Italy has only very limited supplies of iron ore D Following this work on Cepheid variables, our C In Sweden, steel- making on a large scale knowledge of the universe developed late E Conclusive evidence has been put forward about. A the sounds produced by musical instruments could not be properly controlled Sounds produced by continuous vibration tones are spreads waves of compression through the air. C No one has so far managed to detect radio transmissions from other planets. A preservative B decay C absorption D came up with E turned away.
nest...