Mesin pemecah batu: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 4:
== Referensi ==
* Charles E Hermann (1962), [https://patentimages.storage.googleapis.com/ef/f6/17/4cda74b52cef60/US3058676.pdf Paten Rock Crusher], [[United States Patent Office]]
* {{cite book|ref=harv|title=Kamus Istilah Proyek|url=https://books.google.com/books?id=WWFLJBDBNt4C&pg=PA15|publisher=Elex Media Komputindo|isbn=978-979-20-2474-6|p=15}}
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