TL;DR
Is it reasonable to condense a series of short and very similar jobs into one entry on a resume?
Details
I am now in graduate school, and would like to make room on my resume for some recent (awesome) academic projects. I have four different internships on my resume from my undergraduate years that are very relevant to my current work search, but that had very similar projects. Would it be reasonable to condense them into one entry to save some space?
I'm thinking something like this:
Internships
------------------------------------------------------------------------------------------------------------------- Company A DateX - DateY Location
Company B DateX - DateY Location
Company C DateX - DateY Location
Company D DateX - DateY Location
- Project descriptions from the companies
- Technologies used
- Etc
I currently have the company name, employment dates, location, title, and project/responsibility descriptions for every position, so this layout would save me a lot of whitespace between the entries. Additionally, the earlier internships currently contain somewhat extraneous bullet points just because I don't like having a job entry with only one bullet point. This new layout would help me focus my descriptions on only the most important details without leaving awkward-looking job entries.