TY  - BOOK
AU  - Proctor,Mary
AU  - Crommelin,A.C.D.
TI  - Comets: Their Nature and place in the science of astronomy 
U1  - B1102P93f401 
PY  - 1937///
CY  - London
PB  - The Technical Press Ltd
KW  - Astronomy
KW  - Comets
ER  -