| 000 -LEADER |
|---|
| fixed length control field |
013960000a22002890004500 |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER |
|---|
| Classification number |
40469 |
| 040 ## - CATALOGING SOURCE |
|---|
| Original cataloging agency |
CR-TuBCO |
| Transcribing agency |
CR-TuBCO |
| Language of cataloging |
Es |
| 003 - CONTROL NUMBER IDENTIFIER |
|---|
| control field |
CR-TuBCO |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
56159 |
| Personal name |
CHACON S, B. |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
|---|
| 9 (RLIN) |
56160 |
| Personal name |
CHACON S, J. |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
|---|
| Date of publication, distribution, etc |
1980 |
| 245 10 - TITLE STATEMENT |
|---|
| Title |
Contaminación por nitratos en aguas subterráneas de la cuenca superior del río Cañas, Guanacaste |
| 520 ## - SUMMARY, ETC. |
|---|
| Summary, etc |
Nitrate content was studied in groundwater from the Northeastern portion of Rio Cañas basin at Santa Cruz, Guanacaste, Costa Rica. The region comprises 367 square kilometers of the Nicoya Complex and the Rivas geological formations. Samples from 116 wells were analysed during the discharge and recharge periods of the aquifer. Anion concentrations higher than 10 mg/l were found for 16 per cent of the wells during the rainy season, whereas 29.5 per cent of them showeed concentrations ranging between 10 and 45 mg/l during the same period. This was supossed to be a contamination by percolation of fertilizers down the aquifer |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
162025 |
| Topical term or geographic name as entry element |
RECURSOS HIDRICOS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
|---|
| 9 (RLIN) |
2064 |
| Topical term or geographic name as entry element |
COSTA RICA |
| 691 ## - LOCAL SUBJECT ADDED ENTRY--GEOGRAPHIC NAME (RLIN) |
|---|
| 9 (RLIN) |
168640 |
| Geographic name |
WATER RESOURCES |
| 691 ## - LOCAL SUBJECT ADDED ENTRY--GEOGRAPHIC NAME (RLIN) |
|---|
| Geographic name |
COSTA RICA |
| 9 (RLIN) |
2064 |
| 692 ## - |
|---|
| -- |
RESSOURCE EN EAU |
| 692 ## - |
|---|
| -- |
COSTA RICA |
| 773 0# - HOST ITEM ENTRY |
|---|
| Title |
Agronomía Costarricense (Costa Rica) |
| Place, publisher, and date of publication |
1980 |
| Relationship information |
v.4(2) p.183-186 |
| 904 ## - LOCAL DATA ELEMENT D, LDD (RLIN) |
|---|
| a |
BCO |
| 905 ## - LOCAL DATA ELEMENT E, LDE (RLIN) |
|---|
| a |
C |
| 908 ## - PUT COMMAND PARAMETER (RLIN) |
|---|
| Put command parameter |
J |
| 909 ## - |
|---|
| -- |
AS |
| 914 ## - |
|---|
| -- |
FORES |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
|---|
| Koha item type |
Analítica |
