In this way, vegetation acts in somewhat the manner of a chemical developer of exposed photographic plates: it throws up the latent pictures. Flights into yesterday: the story of aerial archaeology, Leo Deuel, St. Martin's Press NY 1969, page 38.
Kwa njia hii, uoto wa vitendo kwa namna fulani ya kemikali developer ya sahani za picha wazi: ni throws up picha latent. Flights ndani ya jana: hadithi ya akiolojia angani, Leo Deueli, St Martin Press NY 1969, ukurasa wa 38.