@unpublished{ITNYREPOID3609,
          author = {Listiyani Retno Astuti},
           title = {Similarity: The Influence Of Physical Properties On The Compressive Strength Of The Rock In The Samigaluh Area, Kulon Progo, Indonesia},
       publisher = {ITNY},
             url = {https://repository.itny.ac.id/id/eprint/3609/}
}