un gran número de

= a good deal of, a great deal of, a plethora of, a wide range of, a full roster of, a fair number of, a great number of, a broad variety of, a wide variety of, a broad range of
Ex: There is a good deal of scope for users and novice cataloguers to find difficulty in identifying the appropriate heading for many of the works which are the responsibility of corporate bodies. Ex: As earlier sections amply demonstrate, there is a great deal of choice with regards to data bases. Ex: A good thesaurus is not necessarily one that has been published with a plethora of effective relationship displays. Ex: A wide range of pamphlet and leaflet material was collected and arranged in cabinet files under topic heads such as health, employment, child welfare. Ex: This university is a privately supported and largely residential institution and it offers a full roster of degrees. Ex: This opinion bothers me on two counts, one because it smacks of exploitation and, two, because a fair number of the world's leaders, for better or worse, were remarkably successful as leaders in spite of less than outstanding academic records. Ex: Environmental organization receive a great number of public enquiries by phone and letter. Ex: Intrantets are becoming very popular among a broad variety of companies. Ex: Document descriptions may be drafted for a wide variety of different kinds of library material, but some common principles can be established. Ex: Data on a broad range of topics were collected.