plant-scans:The Illustrated Guide to Cacti and Indoor Plants, B.Schonfelder and W.J. Fischer, 1972
plant-scans:The Illustrated Guide to Cacti and Indoor Plants, B.Schonfelder and W.J. Fischer, 1972 -- source link
plant-scans:The Illustrated Guide to Cacti and Indoor Plants, B.Schonfelder and W.J. Fischer, 1972 -- source link