Specific Rules for Physical Description (optional) to Citing Entire Reports Vancouver Style:

If a report is published on microfiche, microfilm, or microcards:

Begin with information on the number and type of physical pieces, followed by a colon and a space.

5 microfiche:

3 reels: [of microfilm]

1 microcard:

Enter information on the physical characteristics, such as color and size. Abbreviate common words for measurement, such as in. for inches. Separate types of information by commas.

Typical words used include:

color

black & white

positive

negative

4 x 6 in. (standard microfiche size)

3 x 5 in. (standard microcard size)

35 mm. (a standard microfilm size)

16 mm. (a standard microfilm size)

Examples of complete physical description statements:

3 microfiche: color, positive, 4 x 6 in.

5 microcards: black & white, 3 x 5 in.

1 reel: black& white, negative, 35 mm.

Según:

Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 4: Scientific and Technical Reports