@article{201909.0058,
	doi = {10.20944/preprints201909.0058.v1},
	url = {https://doi.org/10.20944/preprints201909.0058.v1},
	year = 2019,
	month = {September},
	publisher = {Preprints},
	author = {Beata Łaźniewska-Piekar and Jacek Gołaszewski},
	title = {The Relationship between the Air Content in the Mortar and Concrete for Different Types of Cement},
	journal = {Preprints}
}