Par šo grāmatu
Mana bibliotēka
Grāmatas pakalpojumā Google Play
National aid to complete system_.
Page.
12
13
14
15
16
17
18
19
20
21
Good roads needed everywhere_.
Paving roads to national parks...
No money for park road construction__.
General engineering department__
New roads planned and surveyed___
Engineering studies in Grand Canyon and other parks_
Road projects of the early future_---
Trail routes examined and bridges designed.
Use of T. N. T.__
Valuable engineering work and advice__
Landscape engineering department established.
22
23
24
25