Paleontology in 1969

Flagellata: (Calcioflagellata: Coccolithineae Et Discoasterineae) by Flügel, Helmut W., Kamptner, Erwin, Kühn, Othmar

Fossile Nicht-Marine Mollusken-Faunen Aus Nordchina by Tschugguel, Margarethe, Yen, John Teng Chien