Mapped by United States Geological Survey ( USGS ) in 1967 from ground surveys and U . S . Navy aerial photographs taken in 1964.
42.
The U . N . Office for Drug Control and Crime Prevention plans to conduct a ground survey in coming months of the ban's effectiveness.
43.
The campaign will include ground surveys of poppy plantation acreage, opium production, population related to poppy plantations, trading in opium, opium refining and drug addiction.
44.
From ground surveys and satellite photography, archaeologists mapped a system of roads over causeways radiating from the city's center like the spokes of a wheel.
45.
While help arrived in Nahrin, aid distribution to some outlying villages was only just gearing up after reconnaissance teams concluded aerial and ground surveys on Wednesday.
46.
Qanooni said the eradication figure of 25 percent was reached by matching satellite imagery of opium fields with on-the-ground surveys and other " technical surveillance ."
47.
"A ground survey of the damage throughout the affected areas is under way, and this will provide detailed damage reports by later today, " said Naioko.
48.
It was photographed from the air by USN Operation Highjump in 1946-47 and was included in a 1957 ground survey by C . R . Eklund.
49.
Yet in many ways planes would be just as good as balloons for exploring Mars; they, too, could take atmospheric readings and conduct medium-range ground surveys.
50.
This coast was mapped in detail by United States Geological Survey ( USGS ) from ground surveys and U . S . Navy air photos, 1959-66.
