@article{a41ee2df05d040ad9f643f4f5d43f765,
title = "Online versus hardcopy textbooks [4]",
author = "Ronald Dorn",
year = "2007",
month = mar,
day = "2",
doi = "10.1126/science.315.5816.1220a",
language = "English (US)",
volume = "315",
pages = "1220",
journal = "Science",
issn = "0036-8075",
publisher = "American Association for the Advancement of Science",
number = "5816",
}