MacroReference contains references to large areas of knowledge, FAQs where available, and pointers to relevant areas of the MicroReference. MicroReference contains short bits of information and references to specific subjects. Grup Enciclopedia Catalana - Founded in Barcelona in 1965, for the purpose of publishing great reference works. Consists of 15 volumes with the collaboration of more than 2,000 specialists. The Probert Encyclopaedia - Serious reference source with over 60,000 fully hypertext linked entries covering the entire spectrum of human knowledge.
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