Alpha aids, no. 31, published at intervals in the interest of sellers, buyers and users of Portland Cement by Alpha Portland Cement Co., Easton, Pennsylvania and Chicago, Illinois
Alpha aids, no. 31, published at intervals in the interest of sellers, buyers and users of Portland Cement by Alpha Portland Cement Co., Easton, Pennsylvania and Chicago, Illinois
Description:
In the articles presented school boys learn to lay a sidewalk, a concrete roadway is created out of a country lane and concrete is used to make a sundial and a garden box.
