Verlag: United States Geological Survey (USGS, U.S.G.S.), 1978
Anbieter: Eryops Books, Stephenville, TX, USA
No Binding. Zustand: Good. ORIGINAL 1978 Reprint/Offprint of journal article; no covers issued; tiny stain spot on fore-edge of 2 leaves; light browning of leaves; o/w in good condition. Journal.