objectiveLensMaterial

URI: https://gptkb.org/prop/objectiveLensMaterial
4 triples
GPTKB property
Random triples
Subject Object
gptkb:Refracting_telescope gptkb:Crown_glass
gptkb:Refracting_telescope gptkb:Flint_glass
gptkb:Meudon_refractor gptkb:glass
gptkb:Newall_Telescope gptkb:glass