import re


def extract_physical_description(value):
    """Extract physical description from 300 if any."""
    res = re.findall(
        r"([0-9]+ \w[CD\-ROM|DVD\-ROM|diskette|VHS]+)",
        value,
        flags=re.IGNORECASE,
    )
    if res:
        return ", ".join(res).upper()
    return None