Pedro Gruenholz

Colection

Boltus edulis
Lebanon
Cactus Melocactus manzanus
Laos
Cactus Astrophytum
Laos
Cactus Mammillaria theresae
Laos
Mammillaria Cactus
Laos
Edible mushrooms: Agaricus campester
Hungary
Pollution in fish and oceans
Hungary
Malygin icebreaker and polar flight
Hungary
Ceramic jug 16th-17th centuries
Hungary
Vickers VIMV airplane
Hungary