In 1976, the ICHN published the book Natura, ús o abús? Llibre blanc de la gestió de la natura als Països Catalans (Nature, use or abuse? White book of the nature management in the Catalonian countries) which was updated and reedited in 1988. In this large, collective and accurated work, the scientific community agglutinated by the ICHN warned from the urgencies of an appropriate management to protect the Catalonian natural heritage and ending the mutual ignorance between scientists and managers.