TY  - BOOK
AU  - Kiepenheuer,K.O.
ED  - International Astronomical Union.
TI  - Structure and development of solar active regions
AV  - QB524 .I5
U1  - 523.7/4 
PY  - 1968///
CY  - Dordrecht
PB  - D. Reidel
KW  - Solar activity
KW  - Congresses
KW  - Sun
KW  - Active regions
N1  - Includes bibliographies
ER  -