TY  - BOOK
AU  - Sadovski,Alexander N
AU  - Bie,S.W.
AU  - Sadovski,Alexander N.
TI  - Developments in soil information systems: proceedings of the second meeting of the ISSS Working Group on Soil Information Systems, Varna/Sofia, Bulgaria, 30 May - 4 June 1977 
SN  - 9022006557 (pbk.)
U1  - 631.4 23
PY  - 1978///
CY  - Wageningen
PB  - Pudoc
KW  - Soil science
N1  - Includes bibliographical references
ER  -