If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Help
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, withing 24 hours on weekdays.
Customer service
All questions about your order, return and delivery must be sent to our customer service team by e-mail at yourstore@yourdomain.com
Sale & Press
If you are interested in selling our products, need more information about our brand or wish to make a collaboration, please contact us at press@yourdomain.com
Text bsic pels usuaris que comencen a introduirse en bases de dades cientfiques. Es descriu l'estructura i la cerca d'informaci d'aquestes fonts molt utilitzades en l'mbit de les biblioteques acadmiques i de recerca. S'expliquen els sistemes de recuperaci basats en booleans i conceptes bsics com els descriptors, el text lliure i els tesaurus. A partir de diferents exemples s'aprn a diferenciar la cerca en llenguatge lliure, codis de classificaci i tesaurus. Es dedica una part important a explicar les tecnologies de la informaci relacionades amb les bases de dades cientfiques i amb l'obtenci del document final. Recomanat per les persones que necessiten cercar informaci especialitzada i que, mitjanant el llibre, comprendran les diferncies daquests recursos respecte als cercadors dInternet.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
For MAP (Minimum Advertised Price) violations and Intellectual Property (IP) or Trademark concerns, please contact:
support@ergodebooks.com
⚠️ California Proposition 65 Warning: Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
