
: Queries a list of the subclasses of Nickel-Strunz 10th edition classifications.
Nickel_strunz10_subclasses(...)
df, a data frame of the subclasses of Nickel-Strunz 10th edition classifications.
Further parameters.Other optional arguments-Additional arguments.
This function return a list of Nickel-Strunz-10 subclasses. case-insensitive
if (FALSE) {
df <-Nickel_strunz10_subclasses()
}
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