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Elastic stiffness coefficient, H, Quaternary
H-K-O-P
Cl-H-N-Zn
C-H-K-O
H-O-Rb-Se
H-Ni-O-S
quaternary
non-disordered
chalcogen
nonmetal
pnictogen
monoclinic
orthorhombic
tetragonal
cubic
triclinic