U. S. D. I.
Concrete Manual - 7 - New Delhi Oxford & IBH Publishing 1965 - p.642
Concrete Material Mixes Curing Mortar Prestressed Concrete
620.136 U58C
Concrete Manual - 7 - New Delhi Oxford & IBH Publishing 1965 - p.642
Concrete Material Mixes Curing Mortar Prestressed Concrete
620.136 U58C