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Author Maria Hełdak
 

Changes in the Use of Agricultural Land in Poland and Czech Republic
Agnieszka Stacherzak, Ladislav Hájek, Maria Hełdak
J. Ecol. Eng. 2019; 20(7):211–221
DOI: https://doi.org/10.12911/22998993/109869
 
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Construction of Public Roads at the Meeting Point of Different Legislation Systems
Maria Hełdak, Elena Bykowa
J. Ecol. Eng. 2017; 18(6):86–94
DOI: https://doi.org/10.12911/22998993/76217
 
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PLANNING DECISIONS IN LANDSLIDE AREAS
Maria Katarzyna Hełdak, Jakub Szczepański, Monika Płuciennik, Agnieszka Stacherzak
J. Ecol. Eng. 2016; 17(4):218–227
DOI: https://doi.org/10.12911/22998993/64502
 
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