《atlas to the coal flora of Pennsylvania and of the carboniferous formation throughout the united sta》求取 ⇩

1879《atlas to the coal flora of Pennsylvania and of the carboniferous formation throughout the united sta》由于是年代较久的资料都绝版了,几乎不可能购买到实物。如果大家为了学习确实需要,可向博主求助其电子版PDF文件(由lesquereux L. 1879 lanes Hart state printer 出版的版本) 。对合法合规的求助,我会当即受理并将下载地址发送给你。