Internet Archive - principles of navigation 1944 (1944)

财富辛

Title: Principles of Navigation
Source: Internet Archive (Archive.org)

English Introduction:
A 1944 technical instructional short covering orientation, route planning, and the basic methods used in navigation.

中文标题：
导航原理

中文简介：
1944年的技术教学短片，介绍导航中的方位判断、航线规划与基础定位方法。

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