TY - BOOK ID - 744071 TI - Frontiers in astronomy; : readings from Scientific American PY - 1970 SN - 0716709481 9780716709480 PB - San Francisco : W.H. Freeman, DB - UniCat KW - Astronomy KW - Astronomie KW - Astronomy. UR - https://www.unicat.be/uniCat?func=search&query=sysid:744071 AB - ER -