Add spaces: BrunodeFinettiwasbornof"Italianparents,Austriancitizens"ashehimselfwroteinanautobiographicnoteaccompanyingthebookeditedbyhisformerstudentsandfriendsontheoccasionofhis75thbirthday.

Answer: Bruno de Finetti was born of "Italian parents, Austrian citizens" as he himself wrote in an autobiographic note accompanying the book edited by his former students and friends on the occasion of his 75th birthday.

Add spaces: Airsander,randomorbitalsanders,vacuumsander

Answer: Air sander,random orbital sanders,vacuum sander

Add spaces: 89-Emptyboxesandtrays

Answer:
89 - Empty boxes and trays