ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] This handicap has been overcome in recent work, and the mean aerial density of aphids has been measured simultaneously at different heights using traps attached to a barrage balloon cable. The observations were made at Cardington, Beds, in co-operation with the Research and Development ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/168337a0