305,966 ADVANCES Advances in the pharmacology of headache : A Symposium of the AASH at its 31st Annual Meeting, Boston, June 16, 1989 / Forew. John Edmeads. -Belleville : The American Assoc. for the Study of Headache, 1990. - 28 s. : il., wykr. ; 27 cm (Headache; vol. 30, suppl. to nr l)