TY  - JOUR
PY  - 1968//
TI  - National parks: traffic jams turn attention to roads
JO  - Science
A1  - Carter, L. J.
SP  - 770
EP  - 772
VL  - 161
IS  - 3843
N2  - <p>[Abstract unavailable]</p> <p>Language: en</p> 
LA  - en
SN  - 0036-8075
UR  - http://dx.doi.org/10.1126/science.161.3843.770
ID  - ref1
ER  -