au.\*:("HELMUTH HJ")
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ZUR FAZIES DES OBERROTLIEGENDEN IN N.E-MECKLENBURG.HELMUTH HJ.1968; GEOLOGIE; DDR; 1968, VOL. 17, NUM. 0001, P. 52 A 59Miscellaneous
ZUM WERRA-ANHYDRIT (ZECHSTEIN 1) NE-MECKLENBURGS.HELMUTH HJ; WIEGRATZ A; ZAGORA K et al.1968; GEOLOGIE; DDR; 1968(5), VOL. 17, NUM. 0004, P. 378 A 387Miscellaneous
