545,773 PREVENTIVE Preventive strategies for cancers related to immune deficiencies : Fifth Annual ECP Symposium Brussels — Belgium, May 8-9, 1987 Hotel Metropole : summeries of the lectures and abstracts of free communications / ECP European Organization for Cooperation in Cancer Prevention Studies ; co-sponsored by World Health Organization Association contre le Cancer (Belgium). — Amsterdam : Elsevier,. 1987. — /4/, 63 s. ; wykr. ; 25 cm (Cancer Letters, ISSN 0304-3835 ; vol. 36, suppl.)