How do you get this photographic effect? (Film, not digital)?

It's a multiple exposure, 5 of them. Basically, a single frame is exposed multiple times during which it is not advanced. The camera needs to have this function, the setting of which varies from camera to camera. On my Nikon FE-2, it's a lever under film advance crank that prevents the frame from advancing but allows the crank to operate and re-cock the shutter on each exposure. The exposures themselves will have to be properly calculated from the initial metered value. Essentially, you will be dividing the overall exposure by the number of frames taken- each exposure added together equals the metered exposure. Math sucks. But when executed properly, it's a pretty cool technique.