"This entity was first described by WHD de Haas et al. in 1973 3."
Line 23:47·'WHD' has no definition. Spell it out if it's unfamiliar to the audience.
Biographical Lifespan
suggestion
"History and etymology"
Line 22:1·A bold element in the History and etymology section should be a person; it would be useful to have their lifespan details: '<h4>History and etymology</h4> <p>This entity was first described by <strong>WHD de Haas</strong> '