학술논문

PM LETTERS.
Document Type
Letter
Source
Popular Mechanics. Sep2010, Vol. 187 Issue 9, p8-8. 1p.
Subject
*LETTERS to the editor
*FORCE & energy
*AERONAUTICS in medicine
*HELICOPTER ambulances
*LEGAL status of inventors
*SAFETY
Language
ISSN
0032-4558
Abstract
Several letters to the editor are presented in response to articles in the July 10, 2010 issue including "Energyland," "Critical Condition," and "Inventor's Handbook."