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The shadowmeter: a simple device for controlling an aircraft's height above the ground
Author(s) -
Pennycuick C. J.
Publication year - 1973
Publication title -
african journal of ecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.499
H-Index - 54
eISSN - 1365-2028
pISSN - 0141-6707
DOI - 10.1111/j.1365-2028.1973.tb00076.x
Subject(s) - tanzania , citation , simple (philosophy) , library science , common ground , computer science , information retrieval , operations research , history , sociology , engineering , philosophy , communication , epistemology , ethnology