TY - BOOK ID - 7586171 TI - Astrophysics and twentieth-century astronomy to 1950 PY - 1984 SN - 0521242568 PB - Cambridge : Cambridge university press, DB - UniCat KW - Astronomy KW - -Astrophysics KW - -Astronomical physics KW - Cosmic physics KW - Physics KW - Physical sciences KW - Space sciences KW - History KW - Astrophysics KW - History. KW - -History KW - Astronomical physics UR - https://www.unicat.be/uniCat?func=search&query=sysid:7586171 AB - ER -