Experiments in extension programs presented at the Thrity-second Annual Meeting, January 13-16, 1953.

Experiments in extension programs presented at the Thrity-second Annual Meeting, January 13-16, 1953.

Библиографические подробности
Соавтор: National Research Council (U.S.). Highway Research Board
Формат: ‌
Язык:English
Опубликовано: Washington, D.C. Highway Research Board 1953.
Серии:Highway Research Board Bulletin 85.
Предметы:
Highway engineering > Study and teaching.