Hardness.

Ngā taipitopito rārangi puna kōrero
Taitara: Hardness.
Ngā kaituhi: Ling, Frederick F., Fischer-Cripps, Anthony C.
Puna: Introduction to Contact Mechanics (9780387681870); 2007, p151-174, 24p
DOI: 10.1007/978-0-387-68188-7_9
Pātengi raraunga: Complementary Index